This rather impressive 1798 memorial gives us a starting point of 1898 for this photo of Market Street in Sligo, where the people were apparently prolific bill posters, but detail on the posters has unfortunately not been picked up by the camera.
P.S. The pristine lady has not weathered well. See her photographed on 27 April 1991
Date: Circa 1899 to 1907
NLI Ref.: L_ROY_03250
Owner: National Library of Ireland on The Commons
Source: Flickr Commons