I thought there was already a thread that described this but I will start one with sample photos if you will put it in the proper place.
What photos should I take to help Identify my canoe?
Sample photos to help Identify a canoe.
Profile, showing shape of stems. also measure overall length.
Interior, to show seat and thwart configuration.
Bottom, to show type of keel if there is one.
Decks, shape of deck, any decals or even shadows of missing decals or tags are helpful.
Seats, both bow and stern, shape and webbing materials if original, also to see type of hanger bolts.
Stem, the shape of the stem, the serial number of course if there are existing records, even the font of the numbers can be indicators.
These are just the basics to get you started. There are many more details that can be looked into if these dont get you an answer.