▁Returns : ▁An ▁Un o fficial ▁Guide ▁to ▁Your ▁In come - T ax ▁Problem s ▁Illustr ated ▁by ▁Otto ▁S og low ▁( Sim on ▁& ▁Sch uster , ▁ 1 9 4 2 ) ▁ ▁Gr ou cho ▁and ▁Me ▁( B . ▁Ge is ▁Associ ates , ▁ 1 9 5 9 ) ▁Mem oir s ▁of ▁a ▁Mang y ▁L over ▁( B . ▁Ge is ▁Associ ates , ▁ 1 9 6 3 ) ▁The ▁Gr ou cho ▁Let ters : ▁Let ters ▁From ▁and ▁To ▁Gr ou cho ▁Marx ▁( Sim on ▁& ▁Sch uster , ▁ 1 9 6 7 , ▁) ▁The ▁Marx ▁B ros , ▁Sc rap book ▁with ▁Richard ▁An obile ▁( D ar ien ▁House / W ▁W ▁N orton , ▁ 1 9 7 3 , ▁ ▁) ▁The ▁Secret ▁Word ▁Is ▁Gr ou cho ▁with ▁H ector ▁Ar ce ▁( Put nam , ▁ 1 9 7 6 ) ▁The ▁Gr ou cho ▁Ph ile : ▁An ▁Illustr ated ▁Life ▁by ▁Gr ou cho ▁Marx ▁with ▁H ector ▁Ar ce ▁( G al ah ad , ▁ 1 9 7 6 , ▁) ▁ ▁Ess ays ▁and ▁reporting ▁ ▁References ▁ ▁Further ▁reading ▁Mi ri am ▁Marx ▁Allen , ▁Love , ▁Gr ou cho : ▁Let ters ▁From ▁Gr ou cho ▁Marx ▁to ▁His ▁D augh ter ▁Mi ri am ▁( 1 9 9 2 , ▁) ▁Charlotte ▁Ch and ler , ▁Hello , ▁I ▁Must ▁Be ▁Go ing !