Ryan,
Thanks for posting the photos. What unit was the ambulance with the rudder stripes? For those who don't know much about L-5 use history, here are a few facts and speculations. The bulk of L-5's flew in Liaison Squadrons during WWII. Each infantry/armor division had an L-5 assigned to Division Artillery during WWII, and later there were two assigned. At the very end of the war, division artillery units received L-5's to replace individual L-4's turned in, but this was not consistently done. L-5 turnover was fairly high; just the 14th Liaison Squadron had squadron codes up to 6C*AC (that I know of for certain), which means they went through the alphabet and got up to 29 L-5's. But they had, supposedly, over 30 aircraft assigned. They lost several aircraft during the war, crashed or shot down.
So since the bulk of the L-5 story in WWII is contained in the Liaison Squadrons, they should be better represented. Based on the handful of restorations I have seen, there are very few Liaison Squadron's represented in restorations. There are several painted as 25th Liaison Squadron aircraft (Guinea Short Lines). There are two painted as 14th Liaison Squadron aircraft. Other than that, I haven't seen any painted to represent a particular unit, although I know there are a few out there. I don't know all the Liaison Squadrons, but off the top of my head, I can name the 5th, 14th, 19th, 47th, 71st, 72nd, 125th, 157th, 158th, 160th Liaison Squadrons. I'd like to see them portrayed.
Here's an interesting link I found about Liaison Aircraft in WWII. It seems well researched:
http://www.xixcorps.nl/Liaison_aircraft.htm