APHP.S1.A.F1.9
- Record APHP_S1_A_F1_9-001.jpg Philip Fox Letter and First Adler Planetarium Ticket APHP.S1.A.F1.9 Public Domain, http://creativecommons.org/publicdomain/mark/1.0/
- Digital Collection Adler Planetarium Historic Photographs
- Rights Public Domain, http://creativecommons.org/publicdomain/mark/1.0/