As Benson said, it will take a lot more information to id a guideboat. Notable features of guideboat builders are the decks, the shape of the deck beam, the way the feet of the ribs are shaped (and whether they cross the bottom board entirely or not), the shape of the scribe ribs (like cant ribs in a canoe), the shape of the stem, the shape of the stem head, and more.
If you can latch onto Dr. Sulavick's book, posthumously published through the efforts of Chris Woodward and Ted Comstock, that will help you a lot. (Link to book on amazon)