Note: Larger holdings are labeled "Collection"; smaller holdings (less than 2½ inches) are labeled "Manuscript".
For many years F. E. Zimmer and Company served as official reporters for the Louisiana Department of Conservation. The company maintained transcripts of public hearings for the siting of oil and gas drilling locations. These transcripts include testimony taken at the hearing, exhibits presented by the petitioning company, and frequently, maps of the site. The provenance of the collection is unclear, but it was probably donated by F. E. Zimmer. Duplicates of these records are said to exist in Baton Rouge and Lake Charles.