If you don't have an owner's manual, take it to a gunsmith
About $100.
1940's-1950s.
1930's-40's.
100-250 USD
yes 583 1 is the first J C Higgins shotgun model and yes it is 12 gauge .It was manufactured by Harrington & Richardson for Sears in 1945
Try Gun Parts Corp
50-100 dollars
20-140 usd
A bolt action shotgun in 12 gauge.
Used, in good condition, a 349 Gamester model will not bring you more than $200. Probably about $150. Harrington and Richardson firearms are almost always very cheap. They work well enough, but you get what you pay for.
25-175 usd
Have you tried a web search? Local Library? Do a web search on Harrington and Richardson Books and you will find some sources.