The records of the Western Union Mining Company are divided into five series. The first series, Records of the Board of Directors and the Stockholders, includes minutes of the meetings and other records such as financial statements, proxy statements, lists of stockholders, proofs of publication and reports of elections for officers and directors. General Correspondence and Related Records, the second series, is an alphabetical file containing, in addition to correspondence, agreements, annual reports to state agencies, audits, contracts, deeds, leases and other legal documents, and lists of stockholders. The third series is Capital Stock Records. Included are correspondence with stockholders regarding assessments and stock transfers, an assessment journal, several stock ledgers and a stock journal, and capital stock tax returns.
Financial records comprise the fourth series.
Included are a ledger for the Western Union townsite, a financial ledger, financial statements, appraisals, and correspondence concerning the company's 1922 corporate income tax return. The final series is Personnel Records, which includes employee time books, an employee earning ledger, payrolls for the years 1922-1927, and workmen's compensation reports filed with the Aetna Insurance Company.