Flewelling, Ralph Tyler. "Our 'As If' World." The Personalist VI, No. 2 (April 1925): 133-135.

Notes the materialist reaction to The Philosophy of "As If," stating: "We recently ran across such a screed of misunderstanding from Mr. Mencken." Flewelling nonetheless concludes that Vaihinger's book "seems one of the very few real contributions to the literature of philosophy in recent years."

House, Floyd N. Review of The Philosophy of "As If," by Hans Vaihinger. The American Journal of Sociology XXXI, No. 5 (March 1926): 684-685.

Concludes that The Philosophy of "As If" "is a book of one idea, but that one idea is a very important one for the social scientist."

Porter, Alan. "As If." The Spectator 133, No. 5011 (12 July 1924): 61-62.

Hostile review asserting that The Philosophy of "As If" is "Right in detail, wrong in emphasis—the worst one could say of a philosopher." The reviewer makes extensive reference to Buddhist scriptures.

Additional coverage of Vaihinger's life and career may be found in the following source published by Gale Research: Contemporary Authors, Vol. 116.