483685 Opening day: the orators, 1876 (albumen print) by American Photographer, (19th century); Free Library of Philadelphia; (add.info.: Opening day ceremony of the 1876 Centennial Exhibition depicting Art Gallery with trolley cars and crowd of attendees with umbrellas under stormy skies. "Opening day, May 10, 1876. The opening ceremonies took place on the terraces of the Art Gallery and in the area facing the Main Building. Speakers\' stands were erected in front of the Art Gallery, and stands for a great choir and orchestra were placed directly opposite, before the entrance of the Main Building. President and Mrs. Grant were present as were the Emperor Pedro II and Empress Theresa of Brazil." -- Looney, Old Philadelphia in Early Photographs, p. 197. ); 穢 Free Library of Philadelphia ; Print and Picture Collection, Free Library of Philadelphia; American, out of copyright.