What are the different models of an Ithaca 20 Ga?

Ithaca offers several models of their 20-gauge shotguns, with the most notable being the Ithaca Model 37, known for its bottom-ejecting design and smooth operation. Other models include the Ithaca Model 37 Featherlight, which features a lightweight construction, and the Ithaca Model 49, a single-shot shotgun. Additionally, variations may exist in terms of barrel lengths and finishes, catering to different shooting preferences and styles.