I read somewhere that Body 28 might be murdered in June-July 1975 - around this time Gacy set barbecue pit under which this victim was buried. Thats why I assume Body 10 was the second victim to be murdered. Overmore, Gacy stated he murdered his second victim around January 1974 (Note: date of this murder couldn't be determined unlike for other victims). Body 10 was found wearing reddish socks, due to this fact I suppose he was murdered during Fall/Winter (most likely January 1974). Another fact which intrigues me - he was the only victim who didnt have hair on his head. Summary, there are two conclusions:
1) Body 10 was the second victim to be murdered
2) Body 10 was probably bald/had light short hair.