

Key points in the ad that I worked from were
1. The number of words in the dictionary-118,000
2. Number of state superintendents recommending it-36
3. It is unabridged not international
In 1880 the number of words in the ads was noted to be 118,000. But other 1880-1881 ads note that only 35 state superintendents recommended this dictionary. In a June, 1882 ad in Literary World the number of superintendents is 36.
In 1890 the Unabridged Dictionary was revised and enlarged to become the International Dictionary.
Thus, I believe the date of this item is between 1892 and 1889.
