The photos are going from north to south along the 8.5-mile route for the Crenshaw/LAX Line. I posted a map of the light rail line at the very bottom of the post. The project is forecast to open in fall 2019 and is funded primarily by Measure R, the half-cent sales tax approved by Los Angeles County voters in 2008.
Measure M — which has a substantial lead as vote counting continues — would help fund and accelerate an additional station at Aviation/96th St, which will serve as the transfer point to the future LAX people mover that will serve the airport terminals.
All the pics plus a few others are in this Flickr album. Feel free to use and share!