Please direct all correspondence to us as follows:
Art Sphere Inc.
BOK Building, 1901 S 9th Street, Studio 502
Philadelphia, PA 19148
General Inquiries: firstname.lastname@example.org
For visits during regular office hours, use the call box on the 9th St. side of the building, and select either 502 or Art Sphere Inc.
Below are diagrams of the Bok Building (click the image for a larger view).