Genre
Early works to 1800
42
Electronic books
10
Broadsides
5
Documentary television programs
3
Juvenile literature
3
Documentary films
2
Treaties
2
Biography
1
Books printed as advertisements
1
Congresses
1
Cookbooks
1
Early works to 1850
1
Educational films
1
Electronic book
1
Film clips
1
Historical television programs
1
Letters
1
Sources
1
Speeches in Congress
1
Television news programs
1