ique ▁books ▁and ▁arch ae ology . ▁ ▁Over ▁the ▁years , ▁S lot kin ▁collected ▁a ▁number ▁of ▁re lic s ▁that ▁he ▁gave ▁to ▁numerous ▁univers ities ▁and ▁museum s . ▁ ▁One ▁such ▁example ▁is ▁that ▁of ▁an ▁ancient ▁anti phon ary ▁or ▁cho ir ▁book ▁thought ▁to ▁be ▁used ▁in ▁the ▁C athedral ▁of ▁De ville ▁in ▁about ▁ 1 5 0 0 . ▁ ▁S lot kin ▁presented ▁sheets ▁from ▁this ▁book ▁to ▁Mar qu ette ▁University , ▁the ▁Mil w au kee ▁Public ▁Museum , ▁the ▁St . ▁Louis ▁City ▁Art ▁Museum , ▁St . ▁Louis ▁University ▁and ▁St . ▁Louis ▁C athedral . ▁ ▁In ▁ 1 9 6 3 , ▁S lot kin ▁bought ▁the ▁Charles ▁Dar win ▁Family ▁Library ▁in ▁London ▁and ▁don ated ▁all ▁the ▁papers ▁and ▁arte fact s ▁from ▁the ▁collection ▁to ▁the ▁University ▁of ▁Southern ▁California . ▁ ▁Bib lic al ▁arch ae ology ▁In ▁the ▁papers ▁from ▁the ▁Charles ▁Dar win ▁Family ▁Library ▁in ▁London , ▁S lot kin ▁found ▁a ▁story ▁about ▁the ▁T omb ▁of ▁Joseph ▁in ▁Naz are th ▁that ▁spark ed ▁his ▁curiosity . ▁ ▁The ▁search ▁for ▁this ▁tomb ▁led ▁S lot kin ▁to ▁the ▁C ave ▁of ▁the ▁N ativity , ▁the ▁site ▁that ▁Christians ▁have ▁recognized ▁as ▁the ▁birth place ▁of ▁Christ ▁since ▁A . D . ▁ 3 2 5 , ▁and ▁eventually ▁to ▁the ▁N ativity ▁St ones . ▁▁▁ ▁In ▁ 1 9 6 2 , ▁E lias ▁Band