, ▁including ▁what ▁is ▁now ▁known ▁as ▁the ▁C athedral ▁of ▁Learning ▁for ▁the ▁University ▁of ▁Pitts burgh ▁for ▁which ▁they ▁were ▁the ▁main ▁benef act ors . ▁The ▁new ▁university ▁ch an cell or ▁John ▁Gab bert ▁Bow man ▁thought ▁M ell on ' s ▁work ▁was ▁a ▁" w aste " ▁but ▁paid ▁him , ▁and ▁eventually ▁engaged ▁Charles ▁K la uder ▁in ▁February ▁ 1 9 2 4 . ▁ ▁Notable ▁buildings ▁The ▁G ulf ▁Building , ▁now ▁G ulf ▁Tower ▁( 1 9 3 2 ), ▁Pitts burgh , ▁in ▁association ▁with ▁T row bridge ▁& ▁Living ston ▁ ▁Personal ▁life ▁In ▁ 1 9 4 0 , ▁his ▁daughter ▁Jane ▁C ald well ▁M ell on ▁married ▁the ▁New ▁York ▁City ▁lawyer ▁Cra igh ▁Leonard . ▁ ▁Death ▁M ell on ▁died ▁in ▁ 1 9 5 3 . ▁ ▁References ▁ ▁Category : 1 8 7 5 ▁birth s ▁Category : 1 9 5 3 ▁death s ▁Category : 2 0 th - century ▁American ▁architect s ▁Category : M ell on ▁family ▁Category : Arch itect s ▁from ▁Pitts burgh <0x0A> </s> ▁V R ▁Class ▁R ro ▁comes ▁from ▁a ▁word ▁R aut atie R ak enn us Os asto ▁which ▁is ▁the ▁Railway Const ruction ▁Department . ▁ ▁The ▁narrow ▁gauge ▁locomot ive ▁R ro ▁ 2 ▁which ▁is ▁at ▁the ▁Finn ish ▁Railway ▁Museum ▁was ▁originally ▁used ▁by ▁TV H ▁( the ▁road ▁engineering ▁board ) ▁and ▁number ed ▁as ▁TV H ▁locomot ive