One suspect, a man wearing a plaid shirt in the first photo, has been identified as Christopher Begley, 29 of Columbus, police said.
Begley was also seen in surveillance photos wearing a red sweatshirt, according to police.
He is believed to be involved in all the textbook thefts, according to investigators.
Warrants for Begley’s arrest have been issued, investigators said.
Police are seeking the identity of three others, all considered suspects in some of the thefts.
The first suspect, a man wearing a black, short-sleeved shirt, was captured on surveillance video with Begley on June 12 and 30.
Police are also looking to identify a woman seen with the second man in a dock area during the theft on June 12.
In March, police said Begley sold some of the books to a Half Price Books location in Fairborn. However, those books have been located and recovered.
Anyone with information on the suspects or crimes, are asked to contact Miami Valley Crime Stoppers at 937-222-STOP.