Help me fix these pans!

I have acquired 2 pans that have been in my family for years. But have been neglected for a long time. From the best is can tell one is a BSR and the other is a Martin. The BSR is the worst as far as rust. The Martin just has a lot of cooked on seasoning or food on the bottom. I’ve scraped a lot off but there is still some there. I’ve tried baking soda and vinegar on the rust but it’s not all coming off. What do I need to do to take it all off? Sand it? Wire wheel?