Author
Pennsylvania. Department of Commerce
4
North Pennsylvania Railroad Company
2
Pennsylvania State Publicity Commission
2
Ballard, Frances
1
Bonta, Marcia, 1940-
1
Carstens, A H.
1
Central Railroad of New Jersey
1
Coleman, Lyman, 1796-1882
1
DeLorme Mapping Company
1
Federal Writers' Project (Pa.)
1
John Wanamaker (Firm)
1
Landis, Dwight
1
Lehigh Valley Railroad
1
Penn Dept. of Highways
1
Pennsylvania Bureau of Travel Development
1
Pennsylvania Scenic and Historic Commission
1
Pennsylvania. Department of Property and Supplies
1
Pennsylvania. State Publicity Commission
1
Rivinus, Marion Willis Martin, 1889-
1
Seitz, Blair
1
Seitz, Ruth Hoover
1
Sesqui-Centennial International Exposition
1
Stowinsky, Ryan
1
Thwaites, Tom
1
Writers' Program of the Work Projects Administration in the Commonwealth of Pennsylvania
1