The Great Conflagration on Market St. April 18-20, 1906

Front:
The great conflagration on Market St., San Francisco, Cal., April 18- 20, 1906 Copyrighted 1906 by W. J. Street

Back:
1c 2c Mexican THE SPACE ABOVE IS RESERVED FOR FOSTMARK M... M. Rieder, Publ., Los Angeles, Cal. and Dresden. No. 6947 IN SPACE BELOW MAY BE WRITTEN SENDER'S NAME AND