King street was a narrow street running at the left side of St Paul's (when viewed from Market square) into Strand street - it wouldn't be an easy street to get a good photograph in - I've looked in a few of the obvous places - Constance Radcliffe's book on Ramsey, Stephen Dearden + Ken Halsall's postcard tour etc - none have a photo.

If you are on-Island (or have a friend there) try the photographic boxes at Manx Museum.