iet te , ▁passed ▁into ▁the ▁collection ▁of ▁the ▁Ear ls ▁Sp encer . ▁These ▁" S pen cer ▁Albums " ▁of ▁Mar iet te ' s ▁prints ▁are ▁one ▁of ▁the ▁most ▁important ▁ac quis itions ▁made ▁by ▁the ▁Harvard ▁University ▁Art ▁Museum s ▁in ▁recent ▁years . ▁The ▁albums ▁include ▁et ch ings ▁and ▁eng rav ings ▁in ▁a ▁near - per fect ▁state ▁of ▁pres ervation ▁by ▁Italian , ▁Dutch , ▁and ▁F lem ish ▁print m akers , ▁including ▁Jacques ▁Call ot , ▁J use pe ▁de ▁R iber a , ▁and ▁Ad ria en ▁van ▁Ost ade . ▁ ▁Mar iet te ▁also ▁collected ▁contemporary ▁French ▁paint ings , ▁Although ▁he ▁was ▁imm une ▁to ▁the ▁force ful ▁real ism ▁of ▁Ch ardin , ▁the ▁more ▁sentiment al ▁charm ▁of ▁Gre u ze ▁found ▁a ▁place ▁on ▁his ▁walls : ▁Gre u ze ' s ▁Young ▁Pe asant ▁Boy , ▁shown ▁at ▁the ▁Sal on ▁of ▁ 1 7 6 3 ▁had ▁already ▁been ▁purchased ▁by ▁Mar iet te , ▁together ▁with ▁its ▁pendant , ▁before ▁it ▁was ▁exhib ited . ▁ ▁Mar iet te ' s ▁further ▁published ▁works ▁were ▁not ▁many . ▁In ▁ 1 7 5 0 ▁he ▁published ▁a ▁Tra ité ▁historique ▁des ▁pier res ▁grav ées ▁du ▁Cab inet ▁du ▁Ro i , ▁on ▁the ▁hard stone ▁car v ings ▁in ▁the ▁royal ▁collection . ▁His ▁reputation ▁as ▁a ▁con no isseur , ▁who ▁laid ▁down ▁the ▁principles ▁by ▁which ▁the ▁hands ▁of