The Boston College collection of Eric Gill documents his creative process through original drawings, engravings, letterwork, and rubbings. His drawings are studies or preparatory sketches for his printmaking, sculpture, or letterwork. Rubbings likewise are either studies for letterwork or were part of his bas-relief sculpting design process. The collection is heavily focused on Gill's engraving, containing his printing blocks, proofs and limited-edition freestanding prints, and short works by fine print presses St. Dominic's Press and Hague & Gill containing his engravings as illustrations. His letterwork is documented through sketches, font proofs, hand-lettering samples, and two finished plaques, one in plaster and one in stone. Gill's sculpture is the least present in this collection, but is captured in programs and photographs of his sculpture on war memorials, which are included in the series about Gill's work, as well as a few preparatory sketches for works for churches, included with his drawings.

Gill's creative output is supplemented by a small amount of Gill family correspondence, particularly postcards between Gill, his wife, and his children, as well as a few from Stanley Morison of the Monotype Corporation. Some letters from the owner of St. Dominic's Press, H.D.C. Pepler, with other colleagues after Gill's departure from the Guild of St. Jospeph and St. Dominic are also present.

To a lesser degree, the collection also documents work by Gill's artistic peers, and examples of reuse of Gill's illustrations in ephemera after his death.