, ▁where ▁she ▁had ▁trained ▁under ▁Margaret ▁Buch an an . ▁She ▁worked ▁at ▁the ▁school ▁between ▁ 1 9 2 0 ▁and ▁ 1 9 4 2 , ▁first ▁as ▁a ▁lect urer ▁and ▁then ▁as ▁propriet or , ▁changing ▁its ▁name ▁to ▁the ▁College ▁of ▁Ph arm acy ▁for ▁Lad ies ▁in ▁Gordon ▁Square . ▁In ▁ 1 9 2 3 , ▁she ▁presented ▁a ▁paper ▁with ▁her ▁colle ague ▁Kath le en ▁King ▁at ▁the ▁British ▁Ph arma ce ut ical ▁Conference ▁on ▁‘ Intern ational ▁Standard isation ▁of ▁Col ch icum ▁Pre par ations ’ . ▁Ho oper ▁also ▁owned ▁two ▁ph arma cies , ▁where ▁she ▁was ▁keen ▁to ▁app rent ice ▁female ▁ph arm acy ▁students ▁from ▁the ▁school : ▁from ▁ 1 9 3 6 ▁until ▁ 1 9 4 5 ▁at ▁ 1 2 a ▁B els ize ▁Terra ce , ▁London ▁N W 3 ▁and ▁at ▁ 1 ▁Fl ask ▁Walk , ▁H amp st ead , ▁London ▁N W 3 ▁until ▁ 1 9 6 1 . ▁ ▁Activ ism ▁ ▁Ho oper ▁was ▁the ▁first ▁J oint ▁Secretary ▁of ▁the ▁Association ▁of ▁Women ▁Ph arm ac ists ▁on ▁its ▁foundation ▁in ▁ 1 9 0 5 , ▁a ▁post ▁she ▁shared ▁with ▁Georg ina ▁Bar lt rop . ▁ ▁A ▁short ▁report ▁in ▁The ▁Chem ist ▁and ▁Dru gg ist ▁on ▁ 2 4 ▁June ▁ 1 9 1 1 ▁inform s ▁the ▁reader ▁that ▁Els ie ▁Ho oper ▁B . Sc