Big obnoxious cans of super thick extract. Pretty much Muntons or Coopers (google them up for some nostalgia). You had a few choices like dark, medium, light and extra light. You had to heat the thing up in a water bath to get it to pour. Some were already hopped. Boil in whatever pot you had with water. Toss in some yeast (bigger catalogs had maybe 4 options for yeast). Some cans of extract had a little pack of dry yeasts taped to the lid. Most people i knew used 5 gallon Sparklets water bottles (they were all glass back then) for fermenting, covered with a piece of plastic and a rubber band. If you were really cool with your sparklets water service guy, he would leave a bottle with you for a few weeks and still give you your refill. This might cost you a bottle of your latest creation.
Bottle caps, capping tools and ceramic/wire top bottles could be had from Midwest farming or canning type catalogs. We cleaned the bottles the same way we would clean mason jars for canning... In a large enamel pan and steamed them. Selection of anything was minimal. Going way back we never heard of a hydrometer. No concept of gravity or correct temperatures. If you followed the directions on the can you should be pretty close to what was intended. And most of the time, the beer turned out just fine
Back on the Nebraska farm growing up when it was first legalized (1978 I think), there was no internet of course. We had seed catalogs, the sears catalog and ads in the back of magazines, for sourcing things we needed. Put a check in an envelope and a couple few weeks later your stuff was on your door.
The real treat for the kids back then is when dad ordered a Hires Root Beer kit with his beer making stuff. Pungent and potent, loaded with common sugar, and quite tasty. Another treat was when there was a little unhoped extract that mom would mix with some ice cream and whole milk in a blender. Nothing better than a home made malt! Sometimes i'll grab a small bag of DME from the local shop and mix some up for the family.
Fast forward to the late 80's and some grains were showing up at hardware and liquor stores. Basic equipment and tools started really showing up now. Articles in magazines like popular mechanics gave some new ideas and concepts for the home brewer.
Then low and behold, years later, Charlie Papazian writes a book. A guy and his girl, complete with big hair and bell bottoms. Hilarious reading to this day.
Since then, it's gone nuts