Author
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Center City District (Philadelphia, Pa.)
1
Central Philadelphia Development Corporation
2
Chester County Historical Society (West Chester, Pa.)
1
Chisenhall, Fred
1
Citizens' Association for the Improvement of the Streets and Roads of Philadelphia
2
Clark, David T.
1
Cohen, Charles Joseph, 1847-
1
Connelly, Chuck, 1955-
3
Convention of Delegates from the Thirteen Original States Philadelphia)
1
Cope Linder Associates
1
Craver, W. B.
1
Crompton, Robert Donald
2
Crosscup & West
3
Crowell, Charles
1
Cunningham, George Hamilton
1
Cushing, Charles
1
D.G. Wilson, J. Childs Co
1
DFN Gallery
3
Dan Slovic & Associates
1
De Graw, P. V., 1853-1914
1
Delaware County Historical Society
1
Delaware. Bureau of Archaeology and Historic Preservation
1
Delaware. Division of Highways. Location and Environmental Studies Office
1
Delta Group (Firm)
1
Develin, R.
1
Devereux
1
Diffenderffer, Frank Ried, 1833-1921
2
E.A. Wright;
1
Elfreth's Alley Association, Inc
1
Experience
1
Faust, F.n
1
Fenner, Sears & Co
1
Fischer, Joseph
1
Francis Bros
1
Franklin Survey Company,
1
Fraternal Order of Eagles
1
Frederic R. Kirkland Collection
1
Free Library
1
Garrow, Patrick H.
1
Geddes Brecher Qualls Cunningham: Architects
1
Geographia Map Company
2
Geographical Directories Co
1
Gerard, James W. 1823-1900
1
Gilbert & Gihon
1
Gillon, Edmund Vincent
1
Green, Doron, 1868-
2
Grenald Associates
1
Griffin, Martin I. J.
1
Gross, Alexander
1
Gross, Alexander, 1879-1958
2
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