I was 17 in 1971, and remember how much I was into music at the time. It got me thinking of albums that made an impression on me, for one reason or another:
The next album that made a solid impact on me was Led Zeppelin II. I hitchhiked (as usual) from Presidential Lakes to the Mall up 38 on the left side (I can't remember the name now!) to buy it. That album was just what I needed at the time! https://en.wikipedia.org/wiki/Led_Zeppelin_II
There were many others, of course, but those made the most impact. The album that has received the most play from me is Nick Drake's Bryter Layter. I picked it up 10 years after it was released on an impulse--I had no idea who he was. But, if I had to listen to an album on a deserted Island forever, this would be it. I never tire of it. https://en.wikipedia.org/wiki/Bryter_Layter