Here below you will find an impression of the just 7 works that Mary Cassatt showed at the 8th ‘impressionist’ exposition in 1886, including 1 pastel. Some suggestions are very uncertain, see account. See link for the subscriptions and see at the bottom of the main page on Mary Cassatt for the sources.
Mary Cassatt, 8IE-1886-7, Jeune fille à la fenêtre. Now: 1883-4ca, CR125, Susan on a balcony holding a dog , 100×65, NGA Washington (iR92;iR2;iR59;R2,p449;R90II,p257;R44,p23)
Mary Cassatt, 8IE-1886-8, Jeune fille au jardin. Now: 1880-6ca, CR144, Young Woman Sewing in a Garden, 92×65 Orsay (iR2;iR59;iR92;R90II,p239+257;R44,p89;R3,p594)
Mary Cassatt, 8IE-1886-9, Étude. Now: 1886, CR146, Girl arranging Her Hair, 76×62, NGA Washington (iR92;iR2;iR59;R2,p450;R90II,p239+257;R44,p91)
Mary Cassatt, 8IE-1886-10, Portrait. Maybe(??): 1882-3, Susan seated in Garden, 65×50, A2017/05/15 (iR92;iR11)
Mary Cassatt, 8IE-1886-10, Portrait. Maybe(??): 1886ca, Child in Straw Hat, 64×49, NGA Washington(?) (iR92;iR3)
Mary Cassatt, 8IE-1886-11, Enfants sur la plage. Now: 1884, CR131, (Two) children playingon the Beach , 97×74, NGA Washington (iR92;iR2;iR3;iR59;R2,p451;R90II,p239+258;R44,p79)
Mary Cassatt, 8IE-1886-12, Enfants au jardin. Now: 1878, CR57, Children in a Garden (The nurse), 73×92, MFA Houston (iR92;iR2;iR59;aR1;iR2;R90II,p239+258)
Mary Cassatt, 1886-13, Mère et enfant, pastel. Very uncertain: 1880, CR88, Mother and Child (a goodnight hug), pastel, 42×61, A2018/05/14 (iR2;iR59;iR13;iR92)