▁French ▁doors ▁with ▁s idel ights ▁and ▁fan light s ▁in ▁round - arch ed ▁open ings . ▁The ▁m ansion ▁has ▁an ▁exc av ated ▁bas ement ▁with ▁c ement ▁sl ab ▁flo oring , ▁and ▁ 5 ' 5 " ▁walls ▁of ▁smooth ▁c ement ▁on ▁which ▁the ▁brick ▁exterior ▁walls ▁rest . ▁Br ick ▁pi ers ▁l end ▁additional ▁support ▁to ▁the ▁main ▁structure . ▁ ▁Inter ior ▁En comp ass ing ▁about ▁, ▁the ▁layout ▁of ▁the ▁m ansion ▁has ▁the ▁principal ▁rooms ▁of ▁Bo one ▁Hall ▁located ▁on ▁the ▁ground ▁floor . ▁The ▁sp a cious ▁fo yer ▁has ▁pl aster ▁walls ▁with ▁a ▁double ▁cor nice ▁at ▁ce iling ▁level , ▁and ▁flo oring ▁of ▁te ak ▁par quet . ▁A ▁cant ile ver ed ▁w inding ▁st air case ▁r ises ▁to ▁the ▁second ▁level , ▁lit ▁by ▁a ▁triple - hung ▁arch ed ▁window ▁with ▁ 1 2 - light ▁s ash . ▁To ▁the ▁left ▁of ▁the ▁fo yer ▁is ▁the ▁library , ▁accessed ▁through ▁a ▁ma h og any ▁p ane led ▁door , ▁with ▁an ▁arch ed ▁tym pan um ▁and ▁ke yst one , ▁that ▁matches ▁the ▁exterior ▁entry ▁door . ▁Sh allow ▁steps ▁lead ▁down ▁from ▁a ▁landing ▁just ▁inside ▁the ▁room ▁to ▁the ▁floor ▁of ▁wide ▁o ak ▁bo ards . ▁The ▁walls ▁are ▁cl ad ▁in ▁dark ▁green ▁painted ▁cy press ▁panel ing , ▁offset ▁by ▁a ▁white ▁chair ▁rail ▁that ▁fl anks ▁a ▁simple ▁fire place ▁surr