Genre
Periodicals
296
Statistics
126
Directories
69
Congresses
51
Textbooks
41
Exhibitions
20
Sources
20
Bibliography
16
Case studies
16
Classification
11
Yearbooks
11
Catalogs
5
Electronic books
4
Biography
3
Census, 10th, 1880
3
Census, 1850
3
Census, 1860
3
Census, 1870
3
Census, 1880
3
Census, 7th, 1850
3
Census, 8th, 1860
3
Census, 9th, 1870
3
Newspapers
3
Pictorial works
3
Registers
3
Academic theses
2
Archives
2
Collections
2
Early works to 1800
2
Guidebooks
2
Handbooks, manuals, etc
2
History
2
Indexes
2
Maps
2
Surveys
2
Abstracts
1
Microform catalogs
1
Telephone directories
1
Terminology
1
Yellow pages
1