The Idea File of Harold Adams Innis

Another example of a published card index or zettelkasten

I am wholly unsurprised that Harold Innis (1894-1952) maintained a card index (zettelkasten) through his research life, but I am pleased to have found that his literary estate has done some work on it and published it as The Idea File of Harold Adams Innis (University of Toronto Press, 1980). The introduction seems to have some fascinating material on t…