Letter, October 11, 1911
Letter, October 11, 1911
Letter, March 31, 1911
Letter, March 31, 1911
Letter, December 4, 1913
Letter, December 4, 1913
Letter, February 18, 1912
Letter, February 18, 1912
Letter, May 2, 1913
Letter, May 2, 1913
Letter, May 20, 1913
Letter, May 20, 1913
Letter, September 8, 1914
Letter, September 8, 1914
Letter, February 19, 1912
Letter, February 19, 1912
Letter, July 22 (?)
Letter, July 22 (?)
Letter inserted in "Religio Medici"
Letter inserted in "Religio Medici"