Antique medicine bottles

Two small medicine bottles probably containing either merthiolate or mercurochrome. These were found up at my grandparents cabin when they bought it. It had previously been part of a logging camp early in the 20th century. The larger of the two (picture 2) has a stamp on the bottom. It looks to be a "J" or an "I" in a circle. The circle seems to have triangle "wings on either side. On one side of the circle is a "7" and on the other side is a "0". Underneath the circle is a "9". The entire bottom has a stipled texture. The top is a plastic octagonal screw on lid with a glass dropper attached inside. The smaller of the two has what appears to be an "S" in a circle on the bottom...most of it is not there, and a "3" under that. (picture 3) The top to this bottle is a rubber stopper, again with a glass dropper attached. There is still some liquid inside. No labels. Just wondering what these are, who made them and when, and for sure what the substance is/was.