The book lacks a table of contents, but is divided into two main sections: a "catalog", by equipment type, which is somewhat broken down by manufacturer, and an "index", which lists suppiers' addresses for various equipment.
Is not a catalog in a true sense, but can be used to identify different makers and equipment types. There are no prices, and just a summary of the different models available, not complete lists.
Spine: "Printing & Newspaper Catalog 1935".