I am looking for any pictures of Cessna N4750F or possibly N475DF when it was a fire spotter with the Calif Dept of Forestry or any Cessna O-2A in fire spotter paint also any pictures of any OV-1 Mohawk in geological survey service I have found out that CDF purchased 20 0-2 aircraft from Davis-Monthan air base in 1976 the registration numbers are as follows N454DF, N455DF, N455DA, N456DF, N460DF, N463DF thru N475DF, N7200B, N468DE & N67136 so any pictures of any of these aircraft in their CDF livery would help

Are you sure of that registration? I find a N475DF registered as an 0-2 with the US Forest Service

http://www.warbirdregistry.org/o2registry/o2-6811067.html

http://oscar-deuce.com/cgi-bin/index.cgi?action=printtopic&id=46

http://www.airport-data.com/aircraft/N475DF.html

As far as paint goes, I found this one online...of N465DF

http://www.fortunecity.com/skyscraper/cairo/61/n465df.jpg

N469DF

http://www.fortunecity.com/skyscraper/cairo/61/n469df.jpg