Comments on Pennsylvania Trolleys in Color series?

[Evan Jennings]

Morning Sun Books has three titles I wonder if listeners here can comment on:
Pennsylvania Trolleys in Color, Vol.1 Anth. PA Dutch Regions
Pennsylvania Trolleys in Color, Vol.2 Philadelphia
Pennsylvania Trolleys in Color, Vol.3 The Pittsburgh Region

Are these worthwhile books?

-- Evan Jennings (n2xjk at ulster.net)
    The Trolley Museum of New York
    http://www.mhrcc.org/tmny/