... trying to find /remember the title of a very cool futuristic, end-of-world type fiction I read in 1975 (but most likely written in the 60's.)
About a rag-tag group of survivors. At one point they were thrilled when they found some coffee? orange drink? or both.
Very eerie ending where the main guy, now getting elderly? sees young men, riding up on horses? or bikes? and used the expression "as you well know" repeatedly...
It was paperback, the cover was possibly yellow... this isn't much to go on but I do so dearly want to re-read this.
Thank you O readers!