Spanky, yes that helps a lot; thank you.
All: As Spanky referenced, there is a utility called STEGDETECT that may help us out. I just downloaded it and did a preliminary test, with positive results.
STEGDETECT tests if information has been embedded in files using jsteg/outguess/jphide/invisible secrets(wtf?)/F5/camouflage/or appendX. Here are my initial findings:
STEGDETECT run on a normal JPG file that has not been embedded:
[root@SERVER_3 munimuni]# stegdetect 11544r033.jpg
11544r033.jpg : negative
STEGDETECT run on a JPG file that has been embedded
[root@SERVER_3 munimuni]# stegdetect Kurumi01_3204.jpg
Kurumi01_3204.jpg : jphide(***) appended(560)<[random][data][7|FG7.w.P=...x.J]>