Pitkin limestone of northern Arkansas,
by William H. Easton.
- Little Rock, 1942.
- iv, 115 p. illus., maps, 12 plates, 23 cm.
- Arkansas. Geological Survey, 1923- Bulletin 8 .
At head of title: State of Arkansas. Arkansas Geological Survey, Richard J. Anderson, acting state geologist. "Corrections" slip laid in.