Richard Duncan's birth date cannot be discerned from the avaliable material.
Collection Restrictions:
No restrictions on access.
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:
Pilots' Licenses Collection, NASM.XXXX.0650, National Air and Space Museum, Smithsonian Institution.