Bottle feed for both children, because I had to return to work after 8 weeks - maternity leave is much better now. I used dried baby formula and made up enough bottles for a 24 hour period. I used plastic (or similar) bottles, and a steriliser tank/bowl (Milton solution) for bottles and teats. I think the bottles were 8oz size, and I used cloth bibs.
I saw your post about nappies/diapers yesterday. I used cloth/terry nappies, with a liner; I think these were quite new then. This was 40 years ago. Disposables were available 35 years ago (I think), but were expensive.
Interesting research topic!