The W. Scott Westerman Sr. audio collection consists of over 4,100 individually recorded radio broadcasts documented from 1954 until 1976. Recording from his livingroom, Westerman documented broadcasts ranging from American political events and space explorations to nature sounds and symphonies. The collection also contains an extensive listing of radio talk shows, including Bud Guest's "The Sunny Side of the Street," and, "The Bump & Duffy Show." American political events such as presidential debates, visits by foreign dignitaries, and assassinations are also represented. In an interview with a local publication, Westerman, a Methodist minister of over 40 years, stated that while he began his recording hobby for the sake of recording family events, he soon realized that recording history was important so that we might be able to hear the actual voices behind the words in order to provide historical context to events of the past.

The collection is organized into three series: Subject Index Cards, Reel/Cassette Covers, Reels and Cassettes. The Subject Index Cards series contains the individual broadcasts from each reel or cassette. There are several broadcasts on each reel or cassette, and the index card system was devised to easily parse out the contents from each reel or cassette without having to dig through the physical tapes. The index cards are catalogued by subect. Westerman's original subject headings were lost during a change of residence, and additional subject headings were added by the Eastern Michigan University archives staff in 2017.

The Reel/Cassette Covers series contains photocopies of each individual reel/casette case with Westerman's original handwritten table of contents. These photocopies are numbered with the same numbers that Westerman wrote on their corresponding reel/cassette cases. The Reels and Cassettes series contains the actual physical tape reels and cassettes. Each reel/cassette is housed in its original reel/cassette case with Westerman's handwritten table of contents on the back. Seeing the wide array of subjects included on each reel illustrates the need for the index card and photocopy system. There are occasional gaps in the reel collection, due to a number of missing reels. Likewise, there is one cassette missing from the cassette collection. The cassettes in the collection are grouped together in volumes, twelve cassettes per volume, with each cassette being numbered one through twelve. The cassette numbering system is as follows: Volume #/Cassette #/Cassette Side.