The vast majority of my German textbooks are bloody ancient.
Here's one of them ..... first edition 1939, 26th impression 1969.
.. it can't be that bad. It's got quite a few jolly songs in it, and lots of nifty drawings.
I've got lots of similarly "old" books which seem pretty good .
I've written about some of them on here.
Here's some links ...... there's many more .....
and-talking-of-alles-klar.html
great-books-for-learning-german.html
langenscheidts-konversationsbuch.html ( a real corker !)
what-a-beginner-should-read.html
dual-language.html
thin-reads-not-thick-reads.html
silly-german-books.html
... and that's just a tiny % of them.
...meantime, a song .....