Here's a little update :
A) Photos 5340 (
http://www.americanairmuseum.com/media/2487) & 10773 (
http://www.americanairmuseum.com/media/12010) show Mustangs 2 to 7 from rear on grass, with a second row in front of them.
B) Photos 5337 (
http://www.americanairmuseum.com/media/4408) & 5339 (
http://www.americanairmuseum.com/media/4518) show Mustangs 2 to 7 from front. Mustangs 4, 5 & 6 have chocks
C) Photo 5338 (
http://www.americanairmuseum.com/media/2483) show Mustangs 6 & 7 (with a UC-64) from front. Mustang 6 have chocks
D) Photo 14927 (
http://www.americanairmuseum.com/media/14927) show Mustangs 1 to 5 from front. Mustangs 1, 4 & 5 have chocks
E) Photo 5305 (
http://www.americanairmuseum.com/media/2377) show Mustangs 8 to 12 (with the F-5E of the CO of the 7th PRG) from rear. Mustangs 8 & 9 have chocks
F) Photos 5335 (
http://www.americanairmuseum.com/media/2502) & 6183 (
http://www.americanairmuseum.com/media/2528) show Mustangs 9 to 12 (with the F-5) from front. All four have chocks
G) Photos 2329 (
http://www.americanairmuseum.com/media/7958) & 14922 (
http://www.americanairmuseum.com/media/14922) show Mustangs 8 to 15. Mustangs 8 to 13 have chocks
We can assume A & B (and maybe C) were taken at the same time. Also we can assume E & F were taken at the same time. We can assume G was taken after E & F.
Mustang 1/6 moved between D and A & B.
Mustang 7/13 moved between G and A, B & C.