Cartographers of the Office of Coast Survey's Marine Chart Division, Products Branch gather in Hassler Park to pay tribute to Ferdinand Hassler, first

Cartographers of the Office of Coast Survey’s Marine Chart Division, Products Branch gather in Hassler Park to pay tribute to Ferdinand Hassler, first superin tendent of the U.S. Survey of the Coast. L-R: Frank Powers, Paul Spence, Richard Cole (with chart), Patrick Chauvet, Mark Hetrick, Joe Robinson, Mike Gaeta, Holly Johnson, Pramod Singh, John Barber, Dan Morrow, Pearce Hunt, Tangdi Yang.

Photo Location: Maryland, Silver Spring