I have stuff from 1979, 1980 in my collection. But I also have things from 2012. So I don't know if it's memorabilia as much as it is holding on to things that I find relevant that most people might not.
Individual thinkers since the days of Ezekiel and Isaiah have asserted that the despoliation of land is not only inexpedient but wrong. Society, however, has not yet affirmed their belief.