I recently started learning about CW complexes. Although my understanding of them is somewhat nascent, I see that one can deduce a number of useful properties of a space if one can show it is a CW complex. For example, if $X$ is a CW complex, then we can immediately conclude that $X$ is paracompact. While I see the utility of CW complexes, I still do not quite see where the definition of a CW complex comes from. In other words, I don't yet see what motivated the development of CW complexes.
My question is the following:
Are there any sources out there which discuss the historical development of CW complexes and the motivation behind their development?
Note: I am aware that History of Topology by I.M. James contains a chapter entitled “Development of the Concept of a Complex” but I away from my university for the next month and thus do not have access to the book.