710Ba5129: "N.A. Christensen's steel forms for casting conc[rete] ditches". Man spraying steel forms, cattle in field

Abstract

Accompanying note reads, "Pictures of use of in casting experimental sections E. end Hydr. Lab by Herb Schweizer. In 1952, these sections were destroyed when East addition to Lab. was built. Data in Code's files. Civil Eng. Dept"