Assembled by Robert F. Pollock, the collection documents the history of Norumbega Park in the Auburndale neighborhood of Newton, Massachusetts through administrative documents, artifacts, ephemera, maps, photographs, and video recordings.

Norumbega Park administrative documents consist of insurance, licensure, stocks, public relations, grounds renovations, and ultimate closure. Park ephemera includes advertisements, fliers, posters, postcards, and programs promoting park activities; an arcade and rides; boating; an outdoor theater; a restaurant and ballroom, including live music; and a zoo. The extensive assembly of artifacts comprises ashtrays, awards from park competitions, drinkware, paper weights, porcelain miniatures, souvenir spoons, and toys. The Park's closure is illustrated by photographs and printed material of Norumbega shuttered, equipment liquidation, the 1965 fire, and preservation efforts for river-frontage.

The collection also includes Pollock's personal correspondence, photographs, and writings documenting his research on the Park as well as his family, education, and career. Personal photographs include portraits of family members and many snapshots of them enjoying events at Norumbega Park. His biographical records contain his high school transcripts, military records, certificates of continuing education, and documents regarding his burial. Pollock’s papers also contain drafts and published articles, as well as letters, an invitation to a Park event, and a question published in "Ask Marilyn".

Noteworthy materials include letters from Bob Elliot and Ed McMahon about their experiences at Norumbega Park, a copy of a telegram written by Senator John F. Kennedy, an original program signed by Ozzie Nelson advertising his performance at the Totem Pole, Pollock's video "Return to Norumbega", and ephemera from the Commonwealth Avenue Street Railway.