@SFOMuseum Twitter Posts Tagged Underwood This is SFO Museum's archive of the @SFOMuseum Twitter account. There are 2 posts . See all the tags or all the Twitter posts that have been archived so far.

The #Underwood was such a success that by 1939, over five million #typewriters had been produced with only minimal improvement to the original design. #thetypewriter This tweet was posted on December 01, 2017.

Manufactured first as the #Underwood No. 1, it featured a four-row keyboard with single-shift, and most importantly, an ingenious front-strike type-bar mechanism that wrote quickly and visibly with ease. #thetypewriter#typewriter This tweet was posted on December 01, 2017.