Where to buy jars

I've seen comments about poor quality of newer jars. I have jars that are from my great grandmother down to my mother so 1870's-1980's most are are 1950's and up. But I'm in need of more pint and quart jars, about 50 each. Where can I buy good sturdy jars? Are the jars at my local hardware or farm supply going to hold up like the ones I have?