Author
Brøderbund
6
Learning Company
4
Balch Institute Center for Immigration Research
2
Ancestry.com Incorporated
1
Br¿derbund
1
Church of Jesus Christ of Latter-day Saints
1
Filby, P. William, 1911-
1
Free Library of Philadelphia Microforms and Newspapers Dept
1
Gale Research Inc
1
Humphrey, John T.
1
Learning Company (Firm)
1
Pasqualini, Bernard F.
1