Note 120 — Chapter VIII · FINAL DISCOVERY IN 1869 AND 1870
Reading edition
This information was obtained by the author from Jesse M. Matlock, formerly Mrs. William Peterson and Mabel M. White, an adopted daughter, in an interview at Salmon City, June 7, 1943. The latter remembers hearing Mr. Peterson express regret that the Folsom-Cook-Peterson Expedition was not given more recognition for its discovery. Mr. Peterson died in 1918.