Charter (original charter, granted in 1780);
articles of amendment added 1935; laws as amended April 24, 1935.

APA Citation

American Philosophical Society. (1936). Charter (original charter, granted in 1780): articles of amendment added 1935; laws as amended April 24, 1935. Philadelphia.

MLA Citation

American Philosophical Society. Charter (original Charter, Granted In 1780): Articles of Amendment Added 1935; Laws As Amended April 24, 1935. Philadelphia, 1936.

Warning: These citations may not always be complete (especially for serials).