1. Water resources of the Delmarva Peninsula Author/Creator: Cushing, E. M. 1914- (Elliott Morse) Publication/Creation: Washington : U.S. Govt. Print. Off, 1973 Resource Type: Book Access & Availability: Loading
2. General geology of the Mississippi embayment, Author/Creator: Cushing, E. M. 1914- (Elliott Morse) Publication/Creation: Washington : U.S. Govt. Print. Off, 1964 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 448 A-D. Access & Availability: Loading