Taken from press release verbatim; a side note that sister car 907 survives on the Naugatauk RR in private ownership:

The B&O Railroad Museum is proud to announce the completion of an exhibit honoring two great railroaders: John Collinson and Olive Dennis. The museum will open the car to the public with a ribbon cutting ceremony at 1:00 PM on Saturday, June 11th.

The exhibit is housed in the recently restored rare and unique, B&O No. 908 Office Car. It features information, artifacts, and video relating to the history of the office car and the contributions of John Collinson to railroading. Components also focus on the contributions to passenger car service of Olive Dennis, the B&O's first female civil engineer.

John Theodore Collinson was a fourth-gener­ation railroader who rose through the ranks to head several of the most significant railroads in America. During his career he would lead the B&O Railroad, C&O Railway, the Chessie System and Seaboard Sys­tem. He would oversee the merger of the Chessie and Seaboard Systems into CSX and retire as vice chairman of CSX Corporation in 1987 after a 41-year career that began with the Baltimore & Ohio Railroad.

Olive Wetzel Dennis was a pioneering woman, the B&O's first female civil engineer, and one of the most significant women in railroading history. She was an exceptional engineer and contributed greatly to improving the comfort of passenger travel during her career with the B&O. She is also known for designing the B&O's famous Centenary pattern china in 1926.

The No. 908 is a true railroading gem that was built in 1917 as an all-wooden office car for the Chicago & Alton Railroad and numbered No. 503. As built, the car had four staterooms, a dining area next to the observation area, and kitchen at the far end of the car. In 1926, the No. 503 was rebuilt with the addition of a steel under-frame and riveted steel body. Five years later, the Chicago & Alton Railroad became a subsidiary of the Baltimore & Ohio and No. 503 was renumbered as No. 922 to most-likely fit with the then current numbering scheme for B&O office cars. The B&O acquired outright ownership of the car in 1945, and it received a make-over at the Mt. Clare shops. An air conditioning unit and new roller-bearing trucks were added, it was modified from four to three staterooms, and the car was renumbered as the No. 908. It was assigned to the Chief Engineer maintenance of way. It was sold in 1967 and had private owners and was eventually donated to the Baltimore & Ohio Railroad Museum in 1990.

In 1992, the No. 908 was named after John T. Collinson. Mr. Collinson had been assigned the car for his use in the 1960s. He was a strong supporter of the B&O Railroad Museum and served on its board of directors. The No. 908 is dedicated in his memory.

The restoration of the John T. Collinson is made possible by the generosity of his daughter Nancy McGinty, Hays T. Watkins, close friend of Collinson and former Chessie System and CSX Chairman, and Chairman Emeritus of the Baltimore & Ohio Railroad Museum, and The Roz and Marvin H Weiner Family Foundation. Mrs. McGinty and Hays T. Watkins will be on hand for the ceremony.

The No. 908 will be open to the public for special white glove tours that would immerse the tour participants in the history of the car and provide special access and view artifacts relevant to engineering and passenger car design.