Dick Harley Reefer Photos
Historian and modeler Dick Harley of Laguna Beach, CA, has a number of excellent PFE refrigerator car photos on his website (https://harley-trains.smugmug.com/) as well as other railroad-related items. The photos concentrate on details.
Here are the links to the refrigerator car photos:
Wood sheathed ice bunker reefers:
There are several underbody shots of drains and wheel-driven fan systems.
Steel sheathed ice bunker reefers: