▁ 1 9 8 9 ) ▁L ' Av ant ▁Gar de ▁Ab tra ite ▁L ' Art ▁Amer ic ain ▁de ▁ 1 9 5 0 ▁a ▁ 1 9 7 0 ▁“ N ouvelle ▁Ab stra ction ” ▁– ▁Claud ine ▁Hum ble t , ▁Bru xelles ▁The ▁National ▁Museum ▁of ▁American ▁Art , ▁Inter active ▁CD ▁R OM , ▁ 1 9 9 5 ▁Introduction ▁& ▁Text ▁by ▁Roy ▁S lade , ▁" The ▁Cor cor an ▁& ▁Washington ▁Art " ▁Copy right ▁ 1 9 7 6 ▁The ▁Cor cor an ▁Gallery ▁of ▁Art , ▁Washington , ▁D . C .: ▁ 2 0 0 0 ▁copies ▁printed ▁by ▁Gar am ond ▁Press , ▁Baltimore , ▁MD ▁L CC C # ▁ 7 6 - 4 2 0 9 8 ▁The ▁Vincent ▁Mel z ac ▁Collection , ▁Fore word ▁by ▁Walter ▁Ho pp s , ▁Introduction ▁by ▁Ellen ▁G ross ▁Land au , ▁Ret ros pective ▁Notes ▁on ▁the ▁Washington ▁Color ▁School ▁by ▁Barbara ▁Rose , ▁Copy right ▁ 1 9 7 1 ▁The ▁Cor cor an ▁Gallery ▁of ▁Art , ▁Washington , ▁D . C .: ▁printed ▁by ▁Gar am ond / P ri dem ark ▁Press , ▁Baltimore , ▁MD ▁L CC C # 7 5 - 1 5 3 6 4 6 ▁Smith son ian ▁Archives ▁of ▁American ▁Art , ▁Inter view ▁with ▁Ger ald ▁Nord land ▁Con duct ed ▁by ▁Susan ▁Lars en , ▁Chicago , ▁Illinois ▁May ▁ 2 5 – 2 6 ,