Immensely important philosopher of science (1902–1994). Collection of three ALSs in German, signed “K. R. Popper,” each one page, 8.25 x 11.5, dated 1978–79. Untranslated letters to a journalist about a contribution to a lexicon. The first sends thanks for a reduced text and requests that a copy be sent to his university; the second concerns a second revision; and the third discusses his name as “Sir Karl Popper,” with several different configurations of this name written throughout, including “Sir Karl (Raimund) Popper,” “Sir Popper,” and “Sir Raimund Karl Popper,” among other variations. In overall fine condition, with slight scattered creasing. Pre-certified PSA/DNA.
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