my great grandfather answered this ad:
from the Philadelphia Inquirer, 17 March 1901 - FOR SALE - Light lunch and restaurant, doing good business; sickness cause selling 40 S. 4th St. There were also ads from 1899 & 1900 looking for a cook and waitress........

here's the directory info on it.
Philadelphia City Directory, 1890 about La Prell & Kirby (Charles La Prell & J. Wilbur Kirby) Name: La Prell & Kirby (Charles La Prell & J. Wilbur Kirby) Profession: restaurant Address: 40 S 4th........ Philadelphia City Directory, 1890 about Wurst John F. Name: Wurst John F. Profession: restaurant Address: 40 & 151 S 4th, & confectioner, 265 N 8th, h 216 N 5th

****harry f williams is living at 625 n 8th****

the restaurant is in business until about 1914 when harry f williams disappears from the public record.

my question is-how do i find the name of the restaurant or what kind it was? i'm trying to backtrack harry f to where he learned the trade. i have no idea where he was before his wedding in 1899.