United States. Army. Ordnance Dept. This document includes two pages, each with a separate table. The first table is a chart that shows range and elevation for firing particular mortar shells. The second page includes a chart with range and deflection (presumably for the same kind of shells) as well as notes which give additional instructions. [2] p. ; 21 cm. eng text text United States. Army. Ordnance Dept. Wesson, C. M. United States mod-tim 1940 1940-11-01 [Firing and Deflection Conversion Tables] Firing Table for 81 MM Mortar MI and 3" Trench Mortar MK. 1A2, Firing Shell, H.E. M43 and Shell, Practice M43 and M44, Fuze P.D. M52, Weight of Fuzed Projectile -- 6.87 Lb. Deflection Conversion Table, Deflection in Mils Mortars (Ordnance)--Tables. Mortars (Ordnance)--Conversion tables. Trench mortars. Military and War - Weapons shells weapons use firing instructions ark: ark:/67531/metapth46561 http://texashistory.unt.edu/ark:/67531/metapth46561/