Svend Knudsen, Jarlsberg Printer/Holmestrand

Hi, This is a continued investigation into my Knudsen family line. Svend Knudsen, born 1843, married Vilhelmine Karlsen, and was a printer. According to family "lore" he bought the Holmestrand newspaper in 1879, and changed its name to, Jarlsberg. In 1888, he sold part of the paper to a consortium, but continued to run it. He died in 1892, and his widow then ran the newspaper. In 1903, she sold the rest of it. I have tried contacting the paper, to no avail. Does anyone have any suggestions? I would like to see if they have any old papers from that time period with his name on it, showing he was the editor/owner, and possibly old photos of either him, or his wife. Thank you for any assistance.