▁territ ories ▁a ▁" f ine ▁small ▁museum ". ▁ ▁Member ▁states ▁follow ▁a ▁protocol ▁for ▁present ing ▁official ▁g ifts ▁to ▁the ▁United ▁Nations . ▁Pro ced ures , ▁speech es , ▁and ▁cer emon ies , ▁such ▁as ▁the ▁un ve iling ▁of ▁these ▁g ifts , ▁are ▁conducted ▁and ▁coordin ated ▁by ▁the ▁Pro tocol ▁and ▁L ia ison ▁Service . ▁Ide ally , ▁every ▁member ▁nation ▁can ▁only ▁present ▁one ▁offering , ▁and ▁member ▁nations ▁are ▁responsible ▁for ▁the ▁installation ▁of ▁the ▁offered ▁artifact s . ▁ ▁The ▁official ▁g ifts ▁to ▁the ▁United ▁Nations ▁by ▁its ▁member ▁states ▁ep it om ize ▁the ▁ide als , ▁significance ▁and ▁values ▁of ▁the ▁UN ▁as ▁an ▁international ▁organization . ▁ ▁Collection ▁▁ ▁In ▁ 1 9 6 4 , ▁a ▁ 1 5 ▁foot ▁by ▁ 1 2 ▁foot ▁st ained ▁glass ▁window ▁by ▁Marc ▁Ch ag all ▁entitled ▁Peace ▁was ▁don ated ▁to ▁the ▁United ▁Nations ▁by ▁its ▁own ▁staff ▁members ▁and ▁by ▁Ch ag all ▁himself ▁to ▁comm emor ate ▁D ag ▁Ham mar sk jö ld , ▁who ▁served ▁as ▁United ▁Nations ▁Secretary - General ▁from ▁ 1 9 5 3 ▁until ▁his ▁death ▁in ▁ 1 9 6 1 . ▁The ▁st ained ▁glass ▁mem orial ▁contains ▁numerous ▁symbols ▁representing ▁love ▁and ▁peace ▁them es . ▁ ▁In ▁ 1 9 5 2 , ▁a ▁pair ▁of ▁Fern and ▁Lé ger ▁mur als ▁was ▁installed ▁in ▁the ▁General ▁Assembly ▁Hall . ▁ ▁The ▁United ▁Nations ▁Security