<prompt> Qedela umusho olandelayo: Ngo-January 1931, uWalker wavakashela eSoviet Union, efunda e-International Lenin School eMoscow. Wabuyela e - Australia ngo - March 1933 futhi washintsha igama lakhe laba nguRichard Dixon emzamweni wokugwema ukunakwa yizisebenzi zokuphepha, ezazimqambe ngokuthi ungumuntu oyingozi oyishintshashintshayo. Waba unobhala-jikelele we-CPA ngo-1937. Ngo-25 Mashi 1939 washada noDorothy Jean Button ehhovisi lokubhalisa eNorth Sydney. Wakhethwa njengomongameli kazwelonke we-CPA ngo-1948. Ngo-1945 wahlasela inqubomgomo ye-White Australia njengobandlululo nokuhlambalaza, futhi wayemele i-CPA ekomishini yasebukhosini yasePetrov ngo-1954. Nakuba ayethembekile eSoviet Union, wavumelana nesikhundla se-CPA esizimele ngawo-1960 futhi engavumelani no-  <response>: ukuhlasela kweCzechoslovakia ngo-1968. UDixon wathatha umhlalaphansi njengomongameli kazwelonke we-CPA ngo-1972 futhi washona ngo-1976 ngenxa yesifo senhliziyo esiphakeme eBankstown. 