In Part 1, the materials have been grouped into five main divisions: General Correspondence and Miscellaneous Reports and Business Papers; Correspondence with the International President and the International Secretary-Treasurer; Special Correspondence; Minutes; and Financial.

The Special Correspondence file includes a list of the Milwaukee area firms for which correspondence and records of negotiation are retained, followed by 70 folders of general correspondence and labor contracts, arranged by name of person or organization with whom letters were exchanged. These are filed in alphabetical order. Similar files are in Part 2.

The Minutes section contains minutes from general meetings of Local 311 from 1906 to 1950. The file lacks the minutes from August 1910 to July 1921; April 1939 to July 1942; and April 1946 to November 1948. (Minutes for meetings of Local 311 from 1947 to 1959 can be found in Part 2.) Also in the Minutes section are minutes of the meetings of the Executive Board from September 1931 to November 1948. (Minutes of Executive Board meetings for January 1948 to December 1962 are in Part 2.)

The Financial file in Part 1 consists of an expense journal, October 1934 to December 1937. More extensive financial records are in Part 2 under these headings: “Cash book,” “Daybooks,” “Dues Records,” “Expenditures and Receipts,” “Ledgers,” “Note Payments,” and “Social Security Payroll Record.”