This is the original basic specifications for design of the Rural Hill Water Flood Unit in Hamilton County, Illinois. All the dates from these document are in the mid 1950s. There are fold-out maps and designs, confidential marked items, surveyor maps and certificates, pumps, wells, handwritten drawings and notes, etc. Everything is in here to be able to construct the plant! Name of C.J. Frazier Jr. on the inside. Approximately 70 pages, 9 x 11.5 inches. Great condition!