Catharina Heck to Eugen Klee, February 10, 1901

Letter from Catharina Heck to Eugen Klee, February 10, 1901.

Heinrich Haas to Eugen Klee, December 24, 1900

Letter from Heinrich Haas to Eugen Klee, December 24, 1900. Heinrich Haas was the widower of Eugen Klee's sister Amalia.

Klee family illustration, December 24, 1900

Klee family illustration, December 24, 1900.

Klee family letter, December 24, 1900

Klee family letter, December 24, 1900.

Heinrich Haas to Eugen Klee, April 27, 1900

Letter from Heinrich Haas to Eugen Klee, April 27, 1900. Heinrich Haas was the widower of Eugen Klee's sister Amalia.

Klee family letter, January 17, 1900

Klee family letter, January 17, 1900.

Heinrich Haas to Eugen Klee, January 14, 1900

Letter from Heinrich Haas to Eugen Klee, January 14, 1900. Heinrich Haas was the widower of Eugen Klee's sister Amalia.

Heinrich Haas to Eugen Klee, February 11, 1900

Letter from Heinrich Haas to Eugen Klee, February 11, 1900. Heinrich Haas was the widower of Eugen Klee's sister Amalia.

Heinrich Haas to Eugen Klee, January 12, 1900

Letter from Heinrich Haas to Eugen Klee, January 12, 1900. Heinrich Haas was the widower of Eugen Klee's sister Amalia.

Schulz family letter, December 28, 1904

Schulz family letter, December 28, 1904.

Schulz family letter, November 27, 1901

Schulz family letter, November 27, 1901.

Letter to Urte Kupprat Gurklies, January 15, 1909

Letter to Urte Kupprat Gurklies, January 15, 1909.

Heinrich Haas to Eugen Klee, April 27, 1904

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, April 27, 1904.

Heinrich Haas to Eugen Klee, January 25, 1903

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, January 25, 1903.

Heinrich Haas to Eugen Klee, December 10, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, December 10, 1902.

Heinrich Haas to Eugen Klee, October 19, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, October 19, 1902.

Heinrich Haas to Eugen Klee, September 9, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, September 9, 1902.

Heinrich Haas to Eugen Klee, July 24, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, July 24, 1902.

Heinrich Haas to Eugen Klee, June 15, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, June 15, 1902.

Heinrich Haas to Eugen Klee, January 13, 1902

Letter from Heinrich Haas to his brother-in-law, Eugen Klee, January 13, 1902.