Expand your research by checking out the Pennsylvania Online Historical Newspapers here.
Links to directories at GenealogyToday are to the search engine for that particular directory, which is searchable without a subscription. Non-subscribers can use the search engine and see a listing of possible results (but no images or further details). For more information on how to access subscription websites, read Number 5 on my FAQs page.
The Historic Pittsburgh City Directory Collection can be searched across all its directories here.
Pennsylvania Business Directory, Ulman, 1854-5 - Free (Don's List)
Pennsylvania Business Directory, Ulman, 1854-5 - Free (Historic Pittsburgh)
Pennsylvania Regional Telephone Directory, unknown, 1923 - $ (GenealogyToday)
- transcribed
- includes Barnesboro, Beaverdale, Chest Springs, Colver, Cresson, Dunlo, Ebensburg, Johnstown, Nanty-Glo, Patton, Portage, South Fork, and Vintondale