The collection includes a variety of materials belonging to several family members that were found in Laura's house after her death: legal papers; personal calendars of Merta, David, and Laura; papers of Henry and Merta from their professional careers; and family correspondence and other personal papers. They provide a glimpse into the activities of this fascinating Grinnell family.

The family papers generally include legal papers, information about genealogy, photos, correspondence, and miscellaneous items. Noteworthy items include My Family's History by Helen M. Hatch, A Christmas Memoiry by Margaret M. Kiesel, and numerous editions of The Maggie Gazette and Intelligence, a family newsletter written and published by Margaret M. Kiesel. The family correspondence is extensive, and gives a good look into the family members' lives.

Henry's papers include music that he wrote, church programs when he was organist, articles that he wrote on a variety of music-related issues, articles and talks on education (some written during his time as Alumni Secretary), and files of historical material from the Alumni Office.

Merta's papers include programs, reports, and yearbooks of organizations to which she belonged including Entre Nous, Uncle Sam's Club, and Congregational women's groups. Her professional papers include memos, time sheets, correspondence from her tenure with the Consumer Purchases Study and miscellaneous other activities. There are also items from Merta's college years, including papers and notebooks. Go to College and The Education of Merta Johnson Matlack as told by herself give a glimpse into what a woman's education was like around the turn-of-the-century. Gust Johnson's papers include newspaper clippings, letters, report cards, and other miscellaneous stuff.

David's papers include a birth certificate, newspaper clippings, programs from events in Grinnell, correspondence and calendars.

Laura corresponded with Art Department colleagues, other Grinnell College graduates from her class, and with Edith Sternfeld, a former art professor at the college. The remainder of Laura's papers contain material relating to her weaving and to organizations in which she was active including the League of Women Voters, Peace Links, and weavers' groups. Noteworthy items include letters and SGA (Student Government) minutes in response to Kent State killings and closing of Grinnell College, miscellaneous items regarding convocation of 1967 when Martin Luther King Jr spoke at Grinnell College and the Wiemans hosting Benjamin Mays at the 1967 convocation, Recollections of My Husband, Henry Nelson Wieman, and The History of Architecture ... Grinnell Iowa, 1949. Henry N. Wieman's papers include correspondence and newspaper articles, He was a professor of philosophy who taught at several notable universities. The bulk of Henry N. Wieman's papers are at Southern Illinois University at Carbondale.

There are also items from the four remaining Matlack siblings: Mary Davenport, Margaret Kiesel, Jane Rutherford, and Connie Wieman; Merta's parents, Gust and Elma Johnson; Laura'/s husband, Henry N. Wieman; and Maggie's mother-in-law, Anna Kiesel. Correspondence to the Matlack sisters and other papers of theirs are included. Stories about the birth of Connie (born on Christmas day) are especially charming. Anna Kiesel's items include photos, programs, and correspondence. She and Gust Johnson have papers in German and Swedish, that give a glimpse into the ethnic communities of the mid-west in the 19th Century.

There are four boxes of oversize materials that include records, artwork, certificates, photos, music, and correspondence.