Mapwork

At the summer school workshop, Helen mentioned map symbols as a source of ideas, and recommended looking at foreign maps. Several days later, what should turn up out of a heap of papers but the book of map exercises -

It opened to the page of symbols - on US and Canadian maps -

This fascinating little schoolbook must date to the 1960s - this map shows a station on the DEW line in northern Canada - Distant Early Warning of attack from Russia -