Contains correspondence, and records relating to decisions regarding his estate.

Contains Clark's financial records including, but not limited to accounts–payable, accounts-receivable, bank statements, cancelled checks, checkbooks, copies of tax returns, disbursements, estate files, expense statements, farm bills, graph paper, income tax files, income vouchers, invoices, medical payments and claims, paycheck stubs, property list, property tax files, receipts, refunds, reports, Social Security files, tax guides, and work sheets.

Contains transcriptions and audio disk recordings of talks given at his funeral, and more obituaries.

Includes handwritten, typed, and shorthand diaries. Many are personal diaries from 1916 to 1961. Some of his diaries from the same time period are more business oriented. These include diaries about military service, ranches/farms/meat, cattle diseases, and several other subjects. Also includes his diary outlines and excerpts from his father's diary.

Includes letters and correspondence written to Clark just before or just after his death. It also contains obituaries, newspaper articles about his funeral, and letters requesting that his name be removed from mailing lists.

Contains his embossing stamp (unfortunately the lower plate is missing), line of authority cards, stationary, to do lists and an address book.

Contains a few items concerning Clark's personal library.

Contains seminary and institute directories from 1960-1961 and twelve volumes of the annual report of the Church Welfare Plan.

Includes notebooks and diaries of Clark's wife and children, including an autograph book with signatures of prominent figures. It also includes several items about theater and drama, including some play scripts.

Contains a few photographs of the KSL radio tower when it was new, images from the dedication of Pioneer Pipeline, several of a trip to Nauvoo, and photographs of Oliver Cowdery's handwritten account of receiving the Aaronic Priesthood.