Trade card promoting Dr Thomas' "Eclectric Oil". On the front is an illustration of a well dressed boy against a gilt background, holding what looks to be a very large envelope, with "Dr Thomas' Eclectric Oil" written on it in large letters. On the back, advertising text tells you "what it has done" and "what it will do", with a list of ailments it will "positively cure". The time it will take to cure accompanies each of the symptoms or illnesses. For example. a toothache will be cured in 5 minutes while an ear ache takes only 2 minutes. Deafness or lameness will take the longest to cure at a a whole 2 days. Small text on the bottom promises "croup it will cease in 5 minutes and positively cure any case when used at the outset", followed by a reminder that Dr. Thomas' Eclectric Oil is only 50 cents a bottle. 4 1/4" x 2 3/4"