Among Angelo Heilprin Papers was a folder marked Peary Relief Expedition, an 1892 expedition in which Heilprin was involved aboard the Kite. However, the folder is mislabeled and refers not to Peary but to the Greely Relief Expedition of 1883 aboard the Proteus under the command of Lt. Garlington. There is a diary of 14 pages written by a member of that expedition, covering the period from July 19 to August 10. This was the period during which the Proteus was nipped and sank on July 23, 1883. There is an eye-witness account of the sinking, as well as passages concerning the landing of provisions from the wreck onto the ice.