9 0 0 ▁and , ▁for ▁the ▁rest ▁of ▁his ▁life , ▁he ▁supported ▁himself ▁by ▁doing ▁fre el ance ▁work ▁and ▁by ▁taking ▁academic ▁appoint ments . ▁He ▁was ▁elected ▁Sand ars ▁Re ader ▁in ▁Bibli ography ▁at ▁the ▁University ▁of ▁Cambridge ▁in ▁June ▁ 1 9 0 2 . ▁▁ ▁D uff ▁died ▁at ▁his ▁home ▁in ▁Oxford ▁on ▁ 2 8 ▁September ▁ 1 9 2 4 . ▁ ▁Major ▁works ▁Early ▁Print ed ▁Books . ▁London : ▁K eg an ▁Paul , ▁T rench , ▁Tr üb ner ▁& ▁Co ., ▁ 1 8 9 3 . ▁Catalogue ▁of ▁Books ▁in ▁the ▁John ▁Ry lands ▁Library , ▁Manchester , ▁Print ed ▁in ▁England , ▁Scotland ▁and ▁Ireland , ▁and ▁of ▁Books ▁in ▁English ▁Print ed ▁Ab road ▁to ▁the ▁End ▁of ▁the ▁Year ▁ 1 6 4 0 . ▁Manchester : ▁J . ▁E . ▁Corn ish , ▁ 1 8 9 5 . ▁Early ▁English ▁Print ing . ▁London : ▁K eg an ▁Paul , ▁T rench , ▁Tr üb ner ▁& ▁Co ., ▁ 1 8 9 6 . ▁Catalogue ▁of ▁the ▁Print ed ▁Books ▁and ▁Man us cript s ▁in ▁the ▁John ▁Ry lands ▁Library , ▁Manchester . ▁ 3 ▁vol s . ▁ 4 to . ▁Manchester : ▁J . ▁E . ▁Corn ish , ▁ 1 8 9 9 . ▁A ▁Century ▁of ▁the ▁English ▁Book ▁Trade : ▁Short ▁Notices ▁of ▁All ▁Pr inter s , ▁Station ers , ▁Book - bind ers ,