some years ago in the Hudson city directory for 1913, is among my favorites.
I believe someone with the occupation of "fresco painter" would have painted signage on the sides of buildings, like this example, uncovered at 623 Warren Street a year or so ago.
City directories are also rich sources of information about the businesses that existed at different periods in history. Below is an example of the advertisements that appeared in the Hudson city directory for 1870.
The History Room at the Hudson Area Library has an impressive collection of Hudson city directories, and the staff and volunteers are now in the process of scanning the increasingly fragile volumes and making them available to users online. So far, six directories have been digitized, including the very first one for 1851-1852 and the invaluable one for 1888-1889, the year all the numbers on the west-east streets changed. In this directory, addresses on Warren Street are given with the new number--what the number will become with the introduction of 100 blocks--in parentheses.
To explore the history of Hudson as told by its city directories, click here.