?Final Price Realized includes Buyer’s Premium added to Hammer Price
Estimate: $ 200 - $ 300
SANGER-BREDT, IRENE. Her response to criticism by Willy Ley about her late husband's rocket diary. Seventeen-page dossier which includes details of rocket test data, summary of test results, a rocket engine drawing, and a list of errors made by Ley. Signed and inscribed by Sanger-Bredt. With a typescript copy of her letter to Fred Durant of the National Air and Space Museum and a small photograph of Eugen Sanger. Np, 1968
