You'll find more interesting snippets of Black Prince history in the Company History section of the website, updated today with plenty of new 1990's/2000's flashbacks.
Also, check out the Route Rambling section, which is slowly building in to a route by route history of all services operated by Black Prince over the years.
The 4A, 100, 205, 424 & 760/770/771 sections have seen the most input so far.
If anyone can provide detailed information about Black Prince routes please get in touch. The photo below shows HNW366D, in service on the 205 route between Dewsbury Bus Station-Morley Town Hall & Pudsey Bus Station.