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50 years in Cuba

50 years in Cuba

https://flic.kr/p/ANG72z | Vintage Acu-Math No. 400 Simplex Trig Slide Rule, Made In USA By Sterling Plastics, Circa 1968

https://flic.kr/p/ANG72z | Vintage Acu-Math No. 400 Simplex Trig Slide Rule, Made In USA By Sterling Plastics, Circa 1968

Katherine Johnson, the NASA Mathematician Who Advanced Human Rights with a Slide Rule and Pencil NASA chief Charles Bolden recalls the historic trajectory of the “human computer” who played a key role in the Apollo 11 moon landing, and as a female African-American in the 1960s, shattered stereotypes in the process.

Katherine Johnson, the NASA Mathematician Who Advanced Human Rights with a Slide Rule and Pencil

Katherine Johnson, the NASA Mathematician Who Advanced Human Rights with a Slide Rule and Pencil NASA chief Charles Bolden recalls the historic trajectory of the “human computer” who played a key role in the Apollo 11 moon landing, and as a female African

Vintage Pickett Slide Rule, All Metal Construction, Model N 531-ES, Imprinted The Capitol Radio Engineering Institute (CREI).

Vintage Pickett Slide Rule, All Metal Construction, Model N Imprinted The Capitol Radio Engineering Institute (CREI)

Vintage Pickett U.S. Air Force Aerial Photo Slide Rule, Type A-1, Pickett Model 520-T, Made in U.S.A.

Slide Rule, Air Force, Mid Century

Vintage Keuffel & Esser (K&E) 5-Inch Slide Rule, No. 4153-1, Made In USA.

Vintage Keuffel & Esser (K&E) 5-Inch Slide Rule, No. 4153-1, Made In USA.

https://flic.kr/p/Da5Pk9 | Vintage Sterling (685) Precision  Slide Rule, 10 Inch, Red Text Slide, Solid Back, Made In USA

https://flic.kr/p/Da5Pk9 | Vintage Sterling (685) Precision Slide Rule, 10 Inch, Red Text Slide, Solid Back, Made In USA

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