They look really good. I really enjoy looking at midcentury engineering charts/diagrams and stuff like jeppesen charts. NASA has a lot of good ones. The way the text looks, the line economy, the general aesthetic. Well worth the effort imo!

I'm glad I'm not the only who seemingly has a taste for "older" diagrams from that period. It makes me think of the same aesthetic roots of what's now called "cassette futurism" or "NASA-punk". Older engineering charts really feel like there was more care and thought put into each line or facet, even though I'm sure it's a trick of time.