Civil War Era Theater - Boston

Civil War Era Theater, original rare two-sided vintage playbill (circa June 1861) for the Boston Aquarial & Zoological Gardens announcing the live specimens to be seen, including a Beluga White Whale. The back of the playbill includes a description of the whale by the eminent Harvard University professor Louis Agassiz, excerpted from the May 27, 1861 issue of the Boston Journal.  

Approximately 4.75 x 12.25 inches in size.  Expected light age wear and shadows of glue residue on the top and bottom corners, otherwise fine condition.