Keywords: 6inchNewtonMortarLoadingUSArmy.jpg US soldier demonstrates loading of Newton 6 inch Mortar Handbook of artillery including mobile anti-aircraft and trench matériel 1920 page 376 <br>http //www archive org/details/handbookofartill00unitrich 1920-05 United States Army Ordnance Dept US Government no copyright PD-USGov Newton 6 inch Mortar |