Genre
- periodicals407
- posters320
- photographs308
- oral histories (literary genre)306
- serials (publications)295
- sound recordings294
- reminiscences281
- interviews275
- newsletters264
- black-and-white photographs243
- publications (documents)242
- correspondence182
- letters (correspondence)166
- pamphlets82
- drawings (visual works)67
- color photographs64
- botanical illustrations58
- scientific illustrations (images)56
- magazines (periodicals)52
- architectural drawings (visual works)51
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