Nuts & Bolts Volume 44: SP 15 cm s.I.G. 33 | Armorama

Written by Joachim Baschin, it has german & english texts as usual on its 204 pages. Includes 275 photos (199 contemporary photos, 142 colour photos of the surviving vehicles in public and private collections, 34 colour photos of five models ), 12 camouflage schemes, tactical markings, 4 tables of organsisation (KStN), and 2D drawings of all known variants incl. Sd.Ah.116, some of them in 3D.

This is partial text from the full article (usually with photos) at