Need some help getting information...

So today I was given a bayonet by a coworker as a gift, and I'm trying to find as much information on it as possible. I already know that it is a 10in Utica Cutlery bayonet, standard issue for the M1 rifle. The sheath has a name that was once painted on it and is extremely faded, but I can make out a few of the letters on it... How can I figure out who this belonged to for more history on this blade?
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Sorry to break it to you, but likely you won't be able to find anything. To my knowledge no one kept records of who was issued what weapon, let alone a bayonet. Your best bet is probably pumping your coworker for information. If it was in his family since the war, someone might know the history of it.