von Frisch, KarlHandwritten manuscript with sketch, one page, 4 x 6,5 inch, in German, draft with scientific content, written by Karl von Fritsch in blue ink with an added sketch, attractively mounted (removable) for display with a photograph, shows Karl von Frisch in a half length portrait (altogether 11,75 x 8,25 inch), with a central horizontal fold, mild creasing, and trimmed along the right edge in fine condition.