Front:
HUMIDITY
TRANSPIRATION
AM
Back:
Baby
WATERSHED EXPOSITION
Arizona – Sonora Desert Museum
Tucson, Arizona
"Water Street" is the center of the first compre-
hensive WATERSHED EXPOSITION in the world
offering many exhibits showing the importance
of our most important natural resource.
Pub. by Petley Studios, 4051 E. Van Buren, Phoenix, Arizona
Photo by Dick Parrish
68696
