Made by Ernie Root probably in the late 50's. Had models called: Range Master, Target Master, Field Master, Game Master, Pendulus, Brush Master, Sporter, Ranger, Warrior, Rover, Kadet and others. Yours is probably one of the first three. Poundage was stamped into the wood on the early ones. Root was bought out by Shakespeare sometime in the 60's I believe. Than there were bows marked: ROOT by Shakespeare. There are a lot of old Root bows around in my part of the country. They shot well and cost just about as much as other bows of the era.