Not sure what you mean... the book presents what can be described as the design history of GWR wagons and as such omits information about withdrawals. The book does include alterations after building such as conversion for traffic requirements. Also worth considering is that most of the W1 and W5 stock was built before WW1 and hence probably either withdrawn by the GWR or ear-marked for condemnation by BR(WR) in the early 1950s (as per the cull of pre-group designs which started circa 1951).Does the book include BR details?