by Upton Sinclair
by Isabel A. Moser, Steve Solomon
by Calvin Cutter
by B. G. (Benjamin Grant) Jefferis, J. L. (James Lawrence) Nichols
by American National Red Cross, Jane A. Delano, Isabel McIsaac, Anne Hervey Strong
by Bernarr Macfadden
by Irving Fisher, Eugene Lyman Fisk
by Walter Camp
by Woods Hutchinson
by Sir Arthur Newsholme
by Louis Philippe McCarty
by W. Grant (William Grant) Hague
by Elie Metchnikoff
by W. Grant (William Grant) Hague
by Sebastian Kneipp
by John Brown
by Rasmus Larssen Alsaker
by William H. (WIlliam Harvey) Allen
by Philip E. Muskett
by Walter V. Woods
by S. S. (Samuel Silas) Curry
by Woods Hutchinson
by Arnold Lorand
by William Kitchiner
by W. Grant (William Grant) Hague
by Charles Kingsley
by W. Grant (William Grant) Hague
by Chas. A. (Charles Alfred) Tyrrell
by Southwood Smith
by Joel Dorman Steele
by Upton Sinclair, Michael Williams
by Arnold Lorand
by Boyd Laynard
by Anonymous
by Roger Sherman Tracy
by Chas. A. (Charles Alfred) Tyrrell
by Hjalmar Öhrvall
by Southwood Smith