Walter Mason Camp (1867–1925) was an American editor, author, railroad expert and historical researcher.

About his passion for oral history and his intentions for his research, Camp said: After having listened to the story of the Little Bighorn Expedition from the lips of some of the men who participated therein, the current literature [in 1909] on the subject seemed to present such a tangle of fiction, fancy, fact and feeling that I formed an ambition to establish the truth.

His professional work also included a Life of Samuel F. Patterson[2] and papers written for technical associations.

[1] Camp also authored an address to the Order of Indian Wars wherein he described his research findings on distinct conflicts between the United States Army and Native American tribes.

The report claimed that Camp had assembled about fifty pounds of manuscript records throughout his research.

[8] Camp recorded his interviews by taking handwritten notes on papers he had on hand, including the backs of old envelopes and due bills.