[I] Reprinted by special permission from "Penrod and Sam." Copyright, 1916, by Doubleday, Page and Company.
[J] Reprinted by special permission from "Reminiscences of a Ranchman." Copyright, 1910, by George H. Doran Company.
[K] Reprinted from "The Boy Scouts' Year Book." Copyright, 1918, by D. Appleton and Company.
[L] Reprinted from "The Depot Master." Copyright, 1910, by D. Appleton and Company.
[M] Reprinted by special permission from "Land Ho." Copyright, 1890, by Harper and Brothers.
[N] Reprinted from "The Boy Scouts' Year Book." Copyright, 1918, by D. Appleton and Company.
[O] Reprinted by special permission from "Cleek, the Master Detective." Copyright, 1918, by Doubleday, Page and Company.
[P] Reprinted by special permission from "Great Ghost Stories." Copyright, 1918, by Dodd, Mead and Company.
[Q] Reprinted by special permission from "Great Ghost Stories." Copyright, 1918, by Dodd, Mead and Company.