Early travelers to the area that became Yellowstone National Park depended on the abundant fish in the Yellowstone River watershed to supplement their larders, but they often they went hungry after discovering other streams and lakes were barren.
Two Ocean Pass
A Tale: Teddy Roosevelt Bags an Elk on Two Ocean Pass — 1891
" I saw the tips of a pair of mighty antlers, and I peered over the crest with my rifle at the ready. Thirty yards off, behind a clump of pinyons, stood a huge bull."
Two Ocean Pass and the Mystery of the Fishless Waters
"it is certain that there is no obstruction even in dry weather to prevent the passage of trout from the Snake River to Yellowstone Lake; it is quite evident that trout do pass over in this way; and it is almost absolutely certain that Yellowstone Lake was stocked with trout from the west"