Facet
Returns facets based on search terms.
Filter fields available
- category
- end_date
- genre
- start_date
- type
- subject
- creator
Sort fields available
- title
- start_date
- end_date
- creator
Limiting available
- limit
GET /facets?format=api
{
"max_date": {
"value": 9999
},
"creator": [
{
"key": "United Electrical, Radio and Machine Workers of America",
"doc_count": 4336
},
{
"key": "University of Pittsburgh. Chancellor",
"doc_count": 1526
},
{
"key": "Thornburgh, Dick",
"doc_count": 1261
},
{
"key": "Zitterbart, Fidelis",
"doc_count": 888
},
{
"key": "Frick, Henry Clay",
"doc_count": 309
},
{
"key": "Helen Clay Frick Foundation",
"doc_count": 309
},
{
"key": "Marilyn Horne Foundation",
"doc_count": 298
},
{
"key": "Sellars, Wilfrid",
"doc_count": 297
},
{
"key": "Specter, Arlen",
"doc_count": 265
},
{
"key": "Rivers, Sam",
"doc_count": 261
},
{
"key": "Romero, George A.",
"doc_count": 238
},
{
"key": "Consolidation Coal Company",
"doc_count": 229
},
{
"key": "University of Pittsburgh. Archives Service Center",
"doc_count": 196
},
{
"key": "European Commission. Delegation (U.S.)",
"doc_count": 181
},
{
"key": "Hodges, Margaret",
"doc_count": 151
},
{
"key": "Goldstein, Donald M.",
"doc_count": 149
},
{
"key": "Harris, Bud",
"doc_count": 148
},
{
"key": "Hillman, Elsie Hilliard",
"doc_count": 146
},
{
"key": "Allegheny Observatory",
"doc_count": 144
},
{
"key": "University of Pittsburgh. Secretary",
"doc_count": 144
},
{
"key": "Allen, Hervey",
"doc_count": 143
},
{
"key": "Michlovic, Thomas A.",
"doc_count": 139
},
{
"key": "Irvis, K. Leroy, 1919-2006",
"doc_count": 124
},
{
"key": "Lillie, Vernell A. (Vernell Audrey), 1931-",
"doc_count": 122
},
{
"key": "Pittsburgh Irish and Classical Theatre",
"doc_count": 122
},
{
"key": "University of Pittsburgh. Board of Trustees",
"doc_count": 115
},
{
"key": "Western University of Pennsylvania",
"doc_count": 115
},
{
"key": "Irvis, K. Leroy",
"doc_count": 113
},
{
"key": "Moe, Eric",
"doc_count": 109
},
{
"key": "University of Pittsburgh. Nationality Rooms Program. English Nationality Room Committee",
"doc_count": 108
},
{
"key": "Martin, Charles R.",
"doc_count": 106
},
{
"key": "Merriman, Oliver P.",
"doc_count": 105
},
{
"key": "Shaw, Henry F., Jr.",
"doc_count": 103
},
{
"key": "Foerster, Adolph M.",
"doc_count": 99
},
{
"key": "Nevin, Ethelbert",
"doc_count": 98
},
{
"key": "Dear Friends (Musical group)",
"doc_count": 97
},
{
"key": "National Council of Jewish Women. Pittsburgh Section",
"doc_count": 97
},
{
"key": "Stern, Gerald",
"doc_count": 93
},
{
"key": "Curtis, Ford E.",
"doc_count": 92
},
{
"key": "Curtis, Harriet R.",
"doc_count": 92
},
{
"key": "Booth, William Wallace",
"doc_count": 87
},
{
"key": "American Service Institute",
"doc_count": 86
},
{
"key": "Coleman, W. Stephen",
"doc_count": 86
},
{
"key": "Pittsburgh Playhouse",
"doc_count": 86
},
{
"key": "Carnap, Rudolf, 1891-1970",
"doc_count": 84
},
{
"key": "Hesselbein, Frances",
"doc_count": 84
},
{
"key": "Davis, Nathan T. (Nathan Tate)",
"doc_count": 83
},
{
"key": "Elizalde, Julio",
"doc_count": 83
},
{
"key": "CONSOL Energy Inc",
"doc_count": 82
},
{
"key": "Garner, Erroll, 1921-1977",
"doc_count": 82
},
{
"key": "Glaser, Martha, 1921-2014",
"doc_count": 82
},
{
"key": "McGovern, Charles C.",
"doc_count": 81
},
{
"key": "Johnson, Robert",
"doc_count": 74
},
{
"key": "University of Pittsburgh. Graduate School of Public and International Affairs",
"doc_count": 68
},
{
"key": "Ellis, Michael",
"doc_count": 63
},
{
"key": "Murtha, John P., Congressman",
"doc_count": 63
},
{
"key": "Parran, Thomas",
"doc_count": 60
},
{
"key": "Skolnick, Marilyn",
"doc_count": 60
},
{
"key": "Gordon, Donald E.",
"doc_count": 59
},
{
"key": "Lauffer, Max A. (Max Augustus), 1914-",
"doc_count": 59
},
{
"key": "Starzl, Thomas E. (Thomas Earl)",
"doc_count": 59
},
{
"key": "University of Pittsburgh. Center for American Music",
"doc_count": 59
},
{
"key": "Gómez de la Serna, Ramón",
"doc_count": 57
},
{
"key": "George, Kathleen",
"doc_count": 55
},
{
"key": "Rust Engineering Company",
"doc_count": 54
},
{
"key": "STUDIO for Creative Inquiry",
"doc_count": 53
},
{
"key": "Asenjo, Florencio",
"doc_count": 52
},
{
"key": "University of Pittsburgh. Nationality Rooms Program. Armenian Nationality Room Committee",
"doc_count": 52
},
{
"key": "Udin, Sala",
"doc_count": 50
},
{
"key": "Fisher, D. Michael",
"doc_count": 49
},
{
"key": "Domike, Steffi",
"doc_count": 46
},
{
"key": "Oestreicher, Richard Jules",
"doc_count": 46
},
{
"key": "Stone, Donald Crawford",
"doc_count": 45
},
{
"key": "University of Pittsburgh. Nationality Rooms Program. Israel Heritage Room Committee",
"doc_count": 45
},
{
"key": "Borkowski, Joseph A.",
"doc_count": 43
},
{
"key": "Waldman, Jay C.",
"doc_count": 43
},
{
"key": "Family Communications, Inc.",
"doc_count": 42
},
{
"key": "Lloyd, Elisabeth",
"doc_count": 42
},
{
"key": "Myers, Eugene N., 1933-",
"doc_count": 40
},
{
"key": "Gaughan, William J.",
"doc_count": 38
},
{
"key": "Salk, Jonas, 1914-1995",
"doc_count": 38
},
{
"key": "Altmire, Jason",
"doc_count": 37
},
{
"key": "Toker, Franklin",
"doc_count": 37
},
{
"key": "Pennsylvania Peace Links",
"doc_count": 36
},
{
"key": "Pittsburgh (Pa.). Bureau of Police",
"doc_count": 36
},
{
"key": "Salmon, Wesley C.",
"doc_count": 36
},
{
"key": "Women in the Urban Crisis (Pittsburgh, Pa.)",
"doc_count": 36
},
{
"key": "Eliot family",
"doc_count": 35
},
{
"key": "Fu, Freddie H.",
"doc_count": 35
},
{
"key": "Shapiro, Maurice A.",
"doc_count": 35
},
{
"key": "Hamm, Charles",
"doc_count": 34
},
{
"key": "Mitchell, Ruth Crawford",
"doc_count": 34
},
{
"key": "Pittsburgh and Lake Erie Railroad Company",
"doc_count": 34
},
{
"key": "Stevens, Tim",
"doc_count": 34
},
{
"key": "University of Pittsburgh. Graduate School of Public Health",
"doc_count": 34
},
{
"key": "Fox Chapel Garden Club (Fox Chapel, Pa.)",
"doc_count": 33
},
{
"key": "Reichenbach, Hans",
"doc_count": 33
},
{
"key": "University of Pittsburgh",
"doc_count": 33
},
{
"key": "A.W. Mellon Educational and Charitable Trust",
"doc_count": 32
},
{
"key": "Ferlo, James (1951-2022)",
"doc_count": 32
}
],
"min_date": {
"value": 1001
},
"subject": [
{
"key": "Correspondence",
"doc_count": 260
},
{
"key": "Labor",
"doc_count": 238
},
{
"key": "Personal papers",
"doc_count": 206
},
{
"key": "University of Pittsburgh",
"doc_count": 145
},
{
"key": "Business and Industry",
"doc_count": 133
},
{
"key": "Photographs",
"doc_count": 133
},
{
"key": "Pittsburgh (Pa.)",
"doc_count": 130
},
{
"key": "Ethnic groups",
"doc_count": 128
},
{
"key": "Social action",
"doc_count": 122
},
{
"key": "Politics",
"doc_count": 105
},
{
"key": "Associations",
"doc_count": 97
},
{
"key": "Government",
"doc_count": 89
},
{
"key": "Churches and Synagogues",
"doc_count": 88
},
{
"key": "Clippings (Information artifacts)",
"doc_count": 86
},
{
"key": "Societies",
"doc_count": 73
},
{
"key": "Women",
"doc_count": 66
},
{
"key": "Minutes (Administrative records)",
"doc_count": 63
},
{
"key": "Environment",
"doc_count": 62
},
{
"key": "Education",
"doc_count": 52
},
{
"key": "Faculty papers",
"doc_count": 48
},
{
"key": "Church records",
"doc_count": 46
},
{
"key": "Electric industry workers -- Labor unions -- United States -- History",
"doc_count": 43
},
{
"key": "Financial records",
"doc_count": 43
},
{
"key": "Transportation",
"doc_count": 40
},
{
"key": "Theater",
"doc_count": 37
},
{
"key": "Manuscripts (Documents)",
"doc_count": 35
},
{
"key": "Pittsburgh (Pa.) -- Politics and government",
"doc_count": 35
},
{
"key": "Universities and colleges -- Pennsylvania -- Pittsburgh",
"doc_count": 35
},
{
"key": "Labor unions -- United States -- History -- 20th century",
"doc_count": 34
},
{
"key": "Health and medicine",
"doc_count": 33
},
{
"key": "Scrapbooks",
"doc_count": 31
},
{
"key": "Allegheny County (Pa.)",
"doc_count": 30
},
{
"key": "Administrative records",
"doc_count": 29
},
{
"key": "Ledgers (Account books)",
"doc_count": 29
},
{
"key": "Marriage records",
"doc_count": 29
},
{
"key": "Diaries",
"doc_count": 26
},
{
"key": "Newsletters",
"doc_count": 25
},
{
"key": "Transcripts",
"doc_count": 25
},
{
"key": "Classrooms -- Pennsylvania -- Pittsburgh",
"doc_count": 24
},
{
"key": "Labor unions -- Pennsylvania -- Pittsburgh",
"doc_count": 24
},
{
"key": "Pennsylvania -- Politics and government -- 1951-",
"doc_count": 24
},
{
"key": "Architecture",
"doc_count": 23
},
{
"key": "Oral histories (Literary genre)",
"doc_count": 23
},
{
"key": "Pennsylvania -- Church history",
"doc_count": 23
},
{
"key": "Performing arts -- Pennsylvania -- Pittsburgh",
"doc_count": 23
},
{
"key": "Sound recordings",
"doc_count": 23
},
{
"key": "Pittsburgh (Pa.) -- History",
"doc_count": 22
},
{
"key": "Universities and colleges -- Pennsylvania -- Pittsburgh -- Records and correspondence",
"doc_count": 21
},
{
"key": "Video recordings (physical artifacts)",
"doc_count": 21
},
{
"key": "Baptismal records",
"doc_count": 20
},
{
"key": "Business records",
"doc_count": 20
},
{
"key": "Theater -- Pennsylvania -- Pittsburgh",
"doc_count": 20
},
{
"key": "Urban renewal -- Pennsylvania -- Pittsburgh",
"doc_count": 20
},
{
"key": "Church buildings -- Pennsylvania -- Pittsburgh",
"doc_count": 19
},
{
"key": "Audiocassettes",
"doc_count": 18
},
{
"key": "Interviews",
"doc_count": 18
},
{
"key": "Memorabilia",
"doc_count": 18
},
{
"key": "Theater programs",
"doc_count": 18
},
{
"key": "Universities and colleges -- Administration -- Pennsylvania -- Pittsburgh",
"doc_count": 18
},
{
"key": "Allegheny County (Pa.) -- Politics and government",
"doc_count": 17
},
{
"key": "Manuscripts for publication",
"doc_count": 17
},
{
"key": "Negatives (Photographic)",
"doc_count": 17
},
{
"key": "Pennsylvania",
"doc_count": 17
},
{
"key": "Steel industry and trade -- Pennsylvania -- Pittsburgh",
"doc_count": 17
},
{
"key": "Constitutions",
"doc_count": 16
},
{
"key": "Music",
"doc_count": 16
},
{
"key": "Pittsburgh (Pa.) -- Social conditions",
"doc_count": 16
},
{
"key": "Politicians",
"doc_count": 16
},
{
"key": "Slides (Photographs)",
"doc_count": 16
},
{
"key": "Audiotapes",
"doc_count": 15
},
{
"key": "Bylaws (Administrative records)",
"doc_count": 15
},
{
"key": "Minute books",
"doc_count": 15
},
{
"key": "Philadelphia (Pa.)",
"doc_count": 15
},
{
"key": "Pittsburgh (Pa.) -- Church history",
"doc_count": 15
},
{
"key": "Press releases",
"doc_count": 15
},
{
"key": "Videocassettes",
"doc_count": 15
},
{
"key": "Church records and registers -- Pennsylvania -- Pittsburgh",
"doc_count": 14
},
{
"key": "Pittsburgh (Pa.) -- Genealogy",
"doc_count": 14
},
{
"key": "Pittsburgh (Pa.) -- Social life and customs",
"doc_count": 14
},
{
"key": "Political campaigns -- Pennsylvania",
"doc_count": 14
},
{
"key": "Publications (documents)",
"doc_count": 14
},
{
"key": "Contracts",
"doc_count": 13
},
{
"key": "Family papers",
"doc_count": 13
},
{
"key": "Personal correspondence",
"doc_count": 13
},
{
"key": "Philosophy",
"doc_count": 13
},
{
"key": "Programs (Documents)",
"doc_count": 13
},
{
"key": "Architectural drawings (Visual works)",
"doc_count": 12
},
{
"key": "Baptismal records -- Pennsylvania -- Pittsburgh",
"doc_count": 12
},
{
"key": "College teachers -- Pennsylvania -- Pittsburgh",
"doc_count": 12
},
{
"key": "Jews -- Pennsylvania -- Pittsburgh",
"doc_count": 12
},
{
"key": "Lecture notes",
"doc_count": 12
},
{
"key": "Pennsylvania -- Politics and government",
"doc_count": 12
},
{
"key": "Science -- Philosophy",
"doc_count": 12
},
{
"key": "Death records",
"doc_count": 11
},
{
"key": "Industries -- Pennsylvania -- Pittsburgh",
"doc_count": 11
},
{
"key": "Labor unions -- Organizing -- United States",
"doc_count": 11
},
{
"key": "Legal documents",
"doc_count": 11
},
{
"key": "New York (N.Y.)",
"doc_count": 11
},
{
"key": "Pamphlets",
"doc_count": 11
},
{
"key": "Pittsburgh (Pa.) -- Photographs",
"doc_count": 11
}
],
"format": [
{
"key": "documents",
"doc_count": 470274
}
]
}