Author
Morris, Henry S.
2
Barnes, Horace Richards
1
Brown, George Thomas, 1907-
1
Citizens' Municipal Reform Association
1
Davidson, Ralph K. 1921-2002
1
Eastern Gas and Fuel Associates
1
Gloucester City Gas Light Company
1
Lawson, Thomas William, 1857-1925
1
Newcomen Society of the United States
1
Pennsylvania Petroleum Gas Company
1
Pennsylvania Power & Light Company
1
Philadelphia Gas Works
1
Smith, Robert I.
1
United Gas Corporation
1
Wilmington Coal Gas Company (Wilmington, Del.)
1