p-shaw! anger me ????

Ward Kimball was one of the original imagineers. Ward joined the Disney animation staff in 1934. As one of Disney's "nine old men,". Wards house was described by some as "the first
Disneyland." The significance of Wards San Gabriel home as the place where Walt Disney rediscovered and reconnected with his love of railroading that dated back to his childhood in Marceline. Ward and Betty Kimball were the first private citizens to collect and operate full-size trains on their own property.
I thought there was only 4 as well !
Here is more info.
Carrollwood Pacific Historical Society
Ward Kimball Tribute at Walts Barn
Carolwood Historical Society members and the public gathered at Walts Barn in Griffith Park on July 28, 2002, to share stories and remembrances of one of animations great masters: Ward Kimball. The Barn was filled with Ward Kimball memorabilia, from signed posters, to trains he once owned, to a Firehouse Five Plus Two CD, to pictures from his house and railroad collection-- Wards passions in life were well represented.
I believe, the fifth train was named after Ward at this ceremony.