By October 1964, Grumman's lunar module design had grown to 33,000 pounds, up from the original 22,000-pound, two-stage design.
Sources
- The First True Spaceship (smithsonianmag.com)
- https://airandspace.si.edu/stories/editorial/did-brooklyn-dodgers-help-get-us-moon (airandspace.si.edu)
- https://h2g2.com/approved_entry/A3770192 (h2g2.com)
- https://www.dailyrepublic.com/state-nation-world/made-in-bethpage-how-grumman-landed-the-lunar-module-contract-newsday/article_b1255455-54e7-5b5e-a3a6-8bd9dfebe91c.html (dailyrepublic.com)
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