Sikorsky YR-4B
Tuesday, March 26, 2019 by Sarah Sundin
Sikorsky YR-4B at NACA Langley Memorial Aeronautical Laboratory, Hampton, VA, 29 March 1945 (NASA Langley photo: EL-2003-00296)
Sikorsky YR-4B at NACA Langley Memorial Aeronautical Laboratory, Hampton, VA, 29 March 1945 (NASA Langley photo: EL-2003-00296)
“Sundin’s craft is inimitable, and her literary finesse radiates from every page.”—Booklist starred review for The Sound of Light