Formats
- Advertisements--1860-1870.1
- Advertisements--1870-1880.1
- Advertisements.67
- Advertising cards.5
- Advertising media.2
- Aerial photographs.7
- Affidavits.13
- Agendas (administrative records)1
- Agreements.6
- Airmail stamp.1
- Albumen prints -- 1860-1870.1
- Albumen prints--1860-1870.2
- Albumen prints--1870-1890.1
- Albumen prints--1880-1890.2
- Albumen prints--1880-1890. 1
- Albumen prints.50
- Albums (books)9
- Albums--1860-1880.1
- Albums.3
- Algae--United States--1860-1870.1