▁Por ter , ▁ed s . ▁Do ctors , ▁Polit ics ▁and ▁Society : ▁Historical ▁Ess ays ▁( 1 9 9 3 ) ▁pp ▁▁ 2 2 9 – 4 6 . ▁ ▁Morgan , ▁Kenneth ▁O ., ▁and ▁Jane ▁Morgan . ▁Port rait ▁of ▁a ▁progress ive : ▁the ▁political ▁career ▁of ▁Christopher , ▁Vis count ▁Add ison ▁( O x ford ▁University ▁Press , ▁ 1 9 8 0 ). ▁ ▁External ▁links ▁▁▁▁ ▁Material s ▁rel ating ▁to ▁the ▁life ▁of ▁Lord ▁Add ison ▁▁ ▁Category : 1 8 6 9 ▁birth s ▁Category : 1 9 5 1 ▁death s ▁Category : B rit ish ▁Secret aries ▁of ▁State ▁Category : B rit ish ▁Secret aries ▁of ▁State ▁for ▁Domin ion ▁Affairs ▁Category : L ord ▁Pres idents ▁of ▁the ▁Council ▁Category : L ords ▁Priv y ▁Se al ▁Category : Un ited ▁Kingdom ▁Pay master s ▁General ▁Category : M embers ▁of ▁the ▁Priv y ▁Council ▁of ▁the ▁United ▁Kingdom ▁Category : L iber al ▁Party ▁( UK ) ▁MP s ▁for ▁English ▁constitu encies ▁Category : Lab our ▁Party ▁( UK ) ▁MP s ▁for ▁English ▁constitu encies ▁Category : A gr icult ure ▁minister s ▁of ▁the ▁United ▁Kingdom ▁Category : H ack ney ▁M embers ▁of ▁Parliament ▁Category : 2 0 th - century ▁English ▁medical ▁do ctors ▁Category : Al umn i ▁of ▁the ▁Medical ▁College ▁of ▁St ▁Bar th ol ome w ' s ▁Hospital ▁Category : Al umn i ▁of ▁the ▁University