Thanks! I fixed the slow bathtub drain
 

Thanks to you guys, I fixed my slow draining bathtub. Speedy Jim, your
advice was what helped me get the stopper out. Then, after I removed the
clog, I poured some baking soda and vinegar down the drain (read that in
another thread). I also used it to clean the brass stopper while I had it
out and it shines like new! Thanks!