Prof. Courtland D. Perkins - Guest Speaker at Forum 13, 1957
Professor Courtland D. Perkins, Guest Speaker at the Forum.
VFS' (formerly AHS) Annual 13th Forum & Technology Display, May 8-11, 1957, Washington, D. C., USA
Source: Vertiflite (AHS Newsletter) May 1957 (Vol.3, No.5)
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