Throughout the summer of 1923, the country watched as the time for the first test flight of the ZR-1 neared. The airship claimed many firsts. It was to be the world’s largest and the first to be totally constructed in the United States; finally, it would test for the first time the use of helium
from Straffi & Straffi Attorneys at Law https://www.thesandpaper.net/articles/zr-1-takes-to-the-sky-at-last/
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