Scope and Contents From the Series: The Administrative Records series includes contracts (1901-1961), correspondence (1887-1937), cost estimates, an Engineer’s field book, and some stray files.Contracts sometimes include monthly cost estimates and certification by the contractor that the work was completed. Some contracts are copies; some are labeled “original.” In many cases, a signed and notarized copy of the contractor’s bonded status and/or insurance coverage is included. Other correspondence related to the...