The Texas state guard would have been the last place to have modern equipment. I've seen guard units back in the 1980s...which as a active duty-type...it shocked me how badly they were equipped. If they had a typewriter...then they had one and only one...and it would have the squadron orderly room typing anything. And the amount of mistakes would have been easily seen...nothing was ever precisely typed. If this document doesn't have corrections noted on it...I'd be asking questions.
Bingo. Time to change my tag line back to what it was a couple months ago.
All the way back to WWII the NG in the Philipines were using WWI equipment.
Even the Active Duty military wasn’t much better.
I retired in 1986. In 1982 - 1984 I was Ops Sgt and later 1SG for a company. The Company Clerk had a typewriter, Ops had one and Maintenance had one. No computers. They were located at higher headquarters. Our Battalion was still using typewriters.