Correspondence, work orders, and financial documents from the engineering consulting firms ran by Otto Kochtitzky and John E. Warner; includes records from Warner & Poe Cr., Kochtitzky & Warner Drainage Contractors. Records are arranged alphabetically by type and the documents are chronological within the folders. The bulk of the records are work orders from the Little River Drainage District for contact 19, work on ditch number 1. These records date from 1915-1919.