DescriptionBooster-Layout.jpg English: Booster engine installation layout. Source 1922 Locomotive Cyclopedia of American Practice Author This file is lacking
English: Three GEM 40 Booster just before menting to the Delta II first stage. Deutsch: Drei GEM 40 Booster kurz vor der Montage an die erste Stufe einer
No. N 110, after fitting of [[booster engine]] (in 1927) and Modified Front End (in 1936). Note steam pipes to booster mounted on the rear trailing axle