Physical access to film originals (negatives, transparencies, and slides) requires notice a minimum of two business days in advance of visit to allow for retrieval of materials from cold storage.
Collection Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests.
Collection Citation:
Hans Groenhoff Photographic Collection, Acc. XXXX.0359, National Air and Space Museum, Smithsonian Institution.
Collection of the Smithsonian National Museum of African American History and Culture; Gift of the Descendants of Garfield Logan, In Honor of Philip Henry Logan
Collection of the Smithsonian National Museum of African American History and Culture, Gift of Mrs. Rose Greggs in loving memory of her husband Dr. Isaac Ben Greggs