This book is sized to be carried in the field while at the flea markets, antique shops or auctions. Keeping track of your collection is an important part of collecting and maintaining a collection. Although this workbook is written for your Sargent collection, you can also use the extra pages for other pieces in your collection. Each plane has a page and plenty of space for notes and listing of the planes you have, along with multiple types and notes on condition. This allows you to fill in the holes in your collection There are blank pages for other brand planes and notes and descriptions or list of what you need to look for. A description of the condition categories are listed on page 218 Happy Hunting