[August 4th, 1921] For the first time, what is now called a "fax" was sent across the Atlantic Ocean when "a written document was transmitted fac simile... by wireless telegraphy" by the Belinograph machine, which had been used in Europe but hadn't been employed in North America.
from /r/100yearsago
[1921年8月4日]当 "通过无线电报......传送书面文件 "的贝林格机第一次跨越大西洋发送了现在所谓的 "传真"，这种机器在欧洲已经使用，但在北美还没有使用过。