▁ 1 9 1 9 – 1 9 2 0 . ▁Con ne cted ▁to ▁the ▁church ▁is ▁a ▁contrib uting ▁parish ▁hall . ▁ ▁The ▁church ▁has ▁an ▁organ ▁built ▁by ▁A e ol ian - Sk inner ▁Organ ▁Company ▁ ▁Three ▁st ained ▁glass ▁windows ▁were ▁executed ▁by ▁the ▁T iff any ▁Studio . ▁ ▁It ▁was ▁added ▁to ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁ 1 9 9 1 . ▁ ▁See ▁also ▁National ▁Register ▁of ▁Historic ▁Places ▁list ings ▁in ▁northern ▁West chester ▁County , ▁New ▁York ▁ ▁References ▁ ▁External ▁links ▁ ▁St . ▁Mark ' s ▁Epis cop al ▁Church ▁website ▁ ▁Category : Ch urch es ▁completed ▁in ▁ 1 9 1 3 ▁Category : 2 0 th - century ▁Epis cop al ▁church ▁buildings ▁Category : E pis cop al ▁church ▁buildings ▁in ▁New ▁York ▁( state ) ▁Category : Ch urch es ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁New ▁York ▁( state ) ▁Category : National ▁Register ▁of ▁Historic ▁Places ▁in ▁West chester ▁County , ▁New ▁York ▁Category : G oth ic ▁Rev ival ▁church ▁buildings ▁in ▁New ▁York ▁( state ) ▁Category : Ch urch es ▁in ▁West chester ▁County , ▁New ▁York ▁Category : 1 9 1 3 ▁establish ments ▁in ▁New ▁York ▁( state ) ▁Category : Mount ▁K is co , ▁New ▁York <0x0A> </s> ▁Hyper pro th rom bin emia ▁is ▁a ▁state ▁of ▁high ▁of ▁pro th rom bin ▁levels ▁in ▁the ▁blood ▁which ▁leads