Some backpacking loads were very light back in the day. Peruse the fine two volume set "Hiking The Appalachian Trail" and you'll find some outstanding gear pics.
Jim-Shattuck-1966.jpg
Here is Jim Shattuck's tent set up in 1966. That's a minimal one person shelter---and the pack is very light with a minimal harness system.
Andrew-Giger-1969.jpg
Here is Giger's kit from 1969(photo by Andrew J. Giger).
Allen-and-Gregory-1960.jpg
Here is Allen's kit from 1960(photo by Owen F. Allen).