C. H. Sholes diary of a trip to Mt. Shasta, 1904 August (archiveswest.orbiscascade.org) Typescript diary, August 1904, of a Mazamas outing to Mount Shasta, California.
UBL: The brothers, who conducted the operation, all they knew was that they have a martyrdom operation and we asked each of them to go to America but they didn’t know anything about the operation, not even one letter. But they were trained and we did not reveal the operation to them until they are there and just before they boarded the planes.