I drove a taxi and dispatched for a couple of years back in the mid '80s. For ease of use, Street Guides were a drivers best friend, because they just gave you concise directions from the closest main road. For instance, if I wanted Elm street, I would find it quickly alphabetically, and it would tell me something like “Runs south from Main St, two blocks east of First Ave.” The driver would mainly just need a decent understanding of the main roads and how the numbering system for addresses worked, and they could just flip through it pretty quick without having to spread out a big map. The whole city fit into a neat little paperback book.