▁color ing ▁books . ▁They ▁also ▁continued ▁to ▁publish ▁crime ▁and ▁detect ive ▁stories , ▁with ▁books ▁by ▁authors ▁like ▁E . ▁Phill ips ▁O ppen heim , ▁Ed gar ▁Wal lace ▁and ▁Les lie ▁Char ter is . ▁D orn ford ▁Y ates ▁was ▁one ▁of ▁Ward ▁Lock ' s ▁most ▁popular ▁authors ▁around ▁this ▁time . ▁Ar ound ▁this ▁time , ▁Ward , ▁Lock ▁also ▁published ▁Mary ▁Grant ▁Bruce ’ s ▁highly ▁successful ▁Bill ab ong ▁series ▁of ▁books , ▁starting ▁with ▁A ▁Little ▁Bush ▁Ma id ▁in ▁ 1 9 1 1 . ▁ ▁The ▁period ▁between ▁the ▁two ▁World ▁Wars ▁was ▁t ough ▁on ▁publish ers . ▁War wick ▁House ▁was ▁bom bed ▁twice ▁during ▁World ▁War ▁II , ▁the ▁second ▁time , ▁the ▁building ▁was ▁almost ▁completely ▁destroyed . ▁The ▁firm ▁tempor arily ▁re located ▁to ▁Un ile ver ▁House ▁on ▁the ▁Em bank ment , ▁before ▁moving ▁into ▁an ▁office ▁in ▁Sal is bury ▁Square . ▁In ▁ 1 9 4 6 , ▁Ward ▁Lock ▁and ▁Company ▁moved ▁into ▁an ▁office ▁in ▁ 6 , ▁Ch anc ery ▁Lane . ▁They ▁also ▁maintained ▁offices ▁at ▁Nor folk ▁Street , ▁New ▁Court , ▁and ▁Sal is bury ▁Square . ▁ ▁In ▁ 1 9 6 4 , ▁the ▁business ▁split ▁in ▁two , ▁creating ▁Ward ▁Lock ▁Edu c ational ▁Ltd , ▁which ▁was ▁bought ▁by ▁Cass ell ▁Publishing ▁in ▁ 1 9 8 9 . ▁By ▁the ▁early ▁ 1 9 9 0 s , ▁Cass ell ▁was