[Zeke]

Oxalic acid works on oak, teak and the mahogany family. Should work on maple. I have used steam many times for many circumstances but I have not used it for stain removal. I may just be that the steam accelerates the process. I like to watch the progress and with a towel and iron over thew work it hasn't occurred to me to try it. I will next time if the finish will bear it.

That table is seriously damaged finish wise. There are no band aids that I know of that are going to help much. I specialize in non finish stripping restoration and I would not take that job as such. Stripping, bleaching and matching is well within possible.