I believe it is really Shults' Infallible Ointment? They also sold Shults' Veterinary Ointment. Company was around for a very long time and was based in various places over the years. Some of the bottles are embossed Rochester, New York, but I think over the years the company was based in other locations in Pennsylvania and New Jersey, They were around in the 1850's and were still around in the 1930's at least...