4 Cubic Feet The content of this collection includes stamps and envelopes (covers) in varying sizes, formats, and issuance. Material has a multitude of combination of cancellations, cachets, stamps, and envelopes. This collection is stored in eleven boxes: four measuring 8.25" x 12.25" x 5.25", two measuring 12.5" x 10.75" x 5.25", one measuring 15" x 12" x 3", one measuring 13" x 10" x 3", one measuring 15" x 12" x 1.5", and two document cases measuring 10.5" x 15.5" x 5".