I found this cool map while browsing Reddit. You can really get an idea of how some of the outlying areas that used to be connected via rail were in their own self tiny towns. Forest Lawn, Midnapore, of course Bowness, overall lying areas that were eventually consumed by the growing city.
Can also see another airport up on the hill by what is now WestHills.
Really amazing to see how this city is grown such a short period of time it makes you wonder what it will look like in the next 50 years.