This is a quick cut & paste... from a 2004 post here in the Coal Co. board... and it does list the years of operation...

"I am interested in buying old photographs taken by the
Macurdy Photo Studio of Lehigh/Coalgate. He had a studio
there circa 1888-1920, and the photographs have his logo
either on the front or back of his photographs. Anyone having photos that they are willing to sell, please contact me. Diane Macurdy deemac@velocity.net"