In looking through "The Halftrack in Canadian Service" I see more coverage of the IHC than I do of the White, but then I am the publisher and can be considered biased.
The booklets are not designed to satisfy the in-depth needs of vehicle owners but rather to provide an introduction of the topic to casual readers. For this reason they are targeted to museum gift shops and hobby shops.
Each title in the series consists of 24 pages and 22+ photos. ON avergae there are 5,500-6,000 words of text. This text is based on original research. Booklets that cover vehicles (As opposed to artillery) also include a 4-view set of technical drawings by noted illustrator Chris Johnson.
To see the complete list of current and future titles visist
www.servicepub.com/weapons.html
If you would like to author a title in the series then please contact me off-line.