The following photographs are a sample of pages from Ordnance Pamphlet No. 1-A, entitled:

The last page of the book reads:
     Ralph Earle
     Chief of Bureau of Ordnance

     Navy Department
     Bureau of Ordnance
     July 1918

The book measures 7.5 inches wide and 9.5 inches tall.

The first several pages of the book include information on
     Identification of the Enemy
     Target Angle
     Enemy's Speed
     Estimating Enemy Range
     Date of Launching
as well as summary information of the following types of German vessels:
     Dreadnaughts
     Battle Cruisers
     Light Cruisers
     Mine Laying Cruisers
     Pre-Dreadnaughts

The remainder of the book are pages of data and silhouettes for the five types of vessels named above, broken down by every class of ship known to exist at that time.