- Feilitzsch,
Felix A. Sommerfeld:
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag, Amissville, VA 2012, pp. 351ff Quirk,
Robert (1962). An Affair...
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag LLC., Amissville, VA, 2012, p. 165 Grieb, "Pascual Orozco, Jr...
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag LLC, Amissville, Virginia, 2012, p. 381.
Auswaertiges Amt, Mexiko...
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag, Virginia, 2012, p. 359. "Who Was
Venustiano Carranza, Revolutionary...
-
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914. Amissville, VA:
Henselstone Verlag LLC. p. 352. ISBN 978-0-9850317-1-8.
Tierchant 2009, pp. 317–318...
- Feilitzsch,
Felix A. Sommerfeld:
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag LLC, Amissville, Virginia, 2012, p. 186 "Sam
Dreben – Obituary"...
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag, Virginia, 2012, pp. 203–204 Tucker,
Spencer (2006).
World War...
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Henselstone Verlag LLC., Amissville, VA, 2012, p. 285
Heribert von Feilitzsch,
Felix A. Sommerfeld:
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag...
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag, Virginia, 2012, 359. Lieuwen, Edwin,
Mexican Militarism, 24....
-
Plain Sight:
Felix A. Sommerfeld,
Spymaster in Mexico, 1908 to 1914,
Henselstone Verlag LLC, Virginia, 2012, ISBN 9780985031701, p. 234
Heribert von Feilitzsch...
