i found this rather amuzing, hope you will too.
from "A complete guide to hiking and backpacking in missouri, 1974"
in the section about clothing
"The use of layers of clothing allows the hiker to adjust to intermediate temperature ranges rather than just cold or warm. Cotton t-shirts, cotton turtle necked shirts, thermal underwear shirts, vests, sleeveless sweaters, sweaters and windbreakers make excellent combinations."
"Long underwear pants are not necessary unless the temperature is below freezing. Trousers should be loose enough for you to lift your legs for climbing. Loose pants are usually warmer in winter and cooler in summer, since they allow air space which acts as a good thermal insulator. Baggy cotton pants are probably the most functional, but blue jeans rate a close second as they are much more fashionable on the trail. Bib overalls are a good compromise as they are loose fitting and rugged, and the many pockets are quite useful."
so....look for me out on the trail, I'll be the one with the cotton turtleneck, sleeveless sweater, and bib overalls.