Share 'NG World (Kids) Magazine collection for sale'

We have saved issues of NG WORLD magazine from Sept. 1975 to August 1979. We would like to know whether there is a market place / demand for these vintage issues, which are in excellent condition.  How can I sell them or pass them on so that they will be enjoyed by others (and not just cut up for kids' projects, like schools would do now). We are located in Edmonton, Alberta, Canada