Pennsylvania directory of historical organizations; 1970 /
Compiled by Gail M. Gibson.
APA Citation
Pennsylvania Historical and Museum Commission., Gibson, G. M. (1970). Pennsylvania directory of historical organizations; 1970. Harrisburg: The Commission.
MLA Citation
Pennsylvania Historical and Museum Commission, and Gail M Gibson. Pennsylvania Directory of Historical Organizations; 1970. Harrisburg: The Commission, 1970.
Warning: These citations may not always be complete (especially for serials).