I'm selling them because I tend to collect too many things. I have a collectors mentality, and when I get interested in something, in this case the San Diego Zoo, I like to collect things related to that interest. The problem is I'm interested in too many things, and that does consume a lot of money and space

So, I'm curbing that habit. I'm going to focus my collecting impulses on just a couple of subjects that I'm most interested in, keep a few of my favorite pieces from the other subjects, and try and sell the rest. Another smaller motivator is that I'm going to be moving to a different state at some point in the future, and less stuff makes for an easier move.
I have ZOONOOZ' all the way through the current issue, but I'm going to donate the newer ones, from 1991 on, to a school. I have a bunch of other Zoo memorabilia that I will eventually sell as well.
I also have National Geographic's back to the '20's or '30's and Popular Mechanics back to the '50's or '60's that I want to eventually sell.