haven't found any company history yet but i am still looking.
others say that j c Higgins was also a manufacturer of machinery and dabbled in 4 different models of guns as is indicated in the parts books. some say that j c Higgins was just a guy that worked at sears as a controller in the 1940 era and gave his permission to use his name on the sporting goods line.
the model 31 was made by high standard for sears. the numerich catalog list them as made by Higgins. according to my research the model 29 and 30 were actually made by Higgins along with two shotgun models. There is some discussion about that model of rifle.