They say that in life, change is the only constant, and this is true of LIFE Magazine collecting as well. While older readers collected specific issues for personal nostalgia reasons, their children and grandchildren find the magazines to be fascinating time capsules of mid-century American design, fashion, and culture. We’ll talk about the decline and unexpected resurgence of the LIFE secondhand market, part of the same wave of interest in vintage styles that repopularized the vinyl record and the Eames lounge chair—both of which you might find stylish, copy-heavy advertisements for in an old LIFE Magazine.