[de] [Gutenberg 47322] • Alfried Krupp: Ein Lebensbild Dresden und Leipzig. Verlag von Carl Reißner.

[en] [Gutenberg 44979] • The Secret Memoirs of Bertha Krupp / From the Papers and Diaries of Chief Gouvernante Baroness D'Alteville Independently Published

[en] The arms of Krupp, 1587-1968 Back Bay Books

[en] The Franklin Cover-up by Former Green Beret John DeCamp A W T, Incorporated

[en] Crossing the Sea And Other Stories

[en] We Don’t Plummet Out of the Sky Anymore Smashwords, Inc.