Результаты

Felix, David H. scientific instrument collection

"Trip to Philadelphia, NYC, Providence, Boston, Bowdoin" and "Visits to Mississippi, S. Carolina, N. Carolina, 26 March-2 April 1957, New York 13-17 April"

Felix, David H.H. , Felix and Felix, Philadelphia, Pennsylvania

Chicago Planetarium Society (Part 1)

Philadelphia, PA, USA

Fels Planetarium

Fels Planetarium dome under construction

Fels Planetarium theater under construction

Fels Planetarium theater

Fels Planetarium theater

Fels Planetarium dome construction

Image of Isaac Stern in Philadelphia

Print of Isaac Stern in Philadelphia