mitt : ▁" The ▁road ▁to ▁S iem ens ▁stock ▁led ▁to ▁the ▁cre m ator ium ▁past ▁over ," ▁pp .   3 6 f , ▁where , ▁according ▁to ▁the ▁catalog s ▁of ▁the ▁International ▁T rac ing ▁Service ▁A rol sen ▁and ▁Martin ▁Wein mann ▁( eds .). . ▁The ▁Naz i ▁camp ▁system , ▁Frankfurt ▁/ ▁Main ▁ 1 9 9 0 ▁and ▁Feld kir chen : ▁S iem ens ▁ 1 9 1 8 – 1 9 4 5 , ▁pp .   1 9 8 – 2 1 4 , ▁and ▁in ▁particular ▁the ▁associated ▁annotations ▁ 9 1 – 1 8 7 . ▁ ▁M SS ▁in ▁the ▁estate ▁include ▁W anda ▁K ied r zy ' n ska , ▁in : ▁National ▁Library ▁of ▁Poland , ▁Wars aw , ▁Man us cript ▁Division , ▁S yg n . ▁ak c ▁ 1 2 0 1 3 / 1 ▁and ▁archive ▁the ▁mem orial ▁I / 6 - 7 - 1 3 9 ▁RA : ▁see ▁also : ▁Woman ▁Rav ens b ruck ▁concentration ▁camp . ▁An ▁overall ▁presentation , ▁State ▁Justice ▁Administration ▁in ▁Ludwig s burg , ▁IV ▁AR T ▁ 4 0 9 - Z ▁ 3 9 / 5 9 , ▁April ▁ 1 9 7 2 , ▁pp .   1 2 9 ff . ▁ ▁External ▁links ▁▁▁▁▁ ▁S iem ens ▁Historical ▁Institute ▁ ▁Category : 1 8 4 7 ▁establish ments ▁in ▁Pr uss ia ▁Category : A usch witz