Author
United States. Bureau of the Census
7
Fisher, Sydney George, 1856-1927
2
Huidekoper, Harm Jan, 1776-1854
2
Arthur, T. S.
1
Brunsman, Howard George, 1904-
1
Chen, S. Andrew
1
Erie Historical Museum & Planetarium
1
Governor's Pennsylvania Heritage Affairs Commission
1
Karaska, Gerald J.
1
Miller, Herman P.
1
Ngoc Phuong, Truong
1
Olson, Debbie
1
Pennsylvania Legislature Senate
1
Pennsylvania State Data Center
1
Pennsylvania State Planning Board
1
Pennsylvania. Department of Commerce
1
Pleasant, Philip
1
Regional Planning Federation of the Philadelphia Tri-State District Population Committee
1