Just some stray thoughts from a longtime map lover. It makes for some very interesting reflections to ponder the birds-eye maps. Obviously their intent was not that of a cartographer; and yet, I suspect that someone new in town who was not interested in linear feet and the precise degree of angles--in other words, the vast majority of people--would gain a more memorable and thus useful impression, and one with a sufficiency of accuracy, not only of particular neighborhoods but also of the city as a whole, from the birds-eye map than from a detailed cartographer's map.
Their faults are obvious. As an example, here's the detail of one we've been looking at:
LOC
Structures are very largely conventionalized. (I immediately looked at the Avila place on Olvera St., which if it ever looked like that I would be much surprised.) Open spaces are grassy green and often forested with conventionalized fir trees, which is an un-Angeleno look. And yet . . . attention--if hasty and sketchy--is paid to distinctive features of buildings, their number of floors, how they relate to one another, their facades and roofs, their cupolas, steeples, and towers and how they looked at a glance, which is surely all the time those employed in producing the sketches for the project had.
It would be interesting to read what the instructions were for these sketchers, how much time they had to accomplish their feat, and the adventures they had in the doing of it all. A certain amount of further research was done, as I seem to recall that, when we looked into this previously some time ago, a few buildings still in the construction or planning phase in 1909 were showing up on the map, and that it was extremely up-to-date.
I'd guess that the companies and buildings named on the map were largely those who paid an extra fee "up front" to be included that way; and that further income from it was what one might expect, from those attracted to the map enough to purchase a copy. This is the kind of map an Angeleno would send to the folks back in Omaha, with a big red circle around a little structure: "Look, Ma, this is where I live now! I'm the third window on the left!"