First man to conquer the North Pole in an airplane and he also spanned the Atlantic Ocean. ALS signed “Dick Byrd,” four pages on two adjoining sheets, 4.5 x 7, no date. Letter full of scientific content. In part, “It is great of you to hold such a generous attitude towards my poor effort to further progress. My own brothers could not hold a more sympathetic understanding of my exploits…I am working day and night right now on scientific things.” In fine condition, with light show through from text on reverse and a shade of mild toning. R&R COA.