He set up a law firm, "M. Rosenblum and Co" in the 1930s; in 1959 he employed as an articled clerk John Howard who later became an Australian prime minister.
[4] Myer and sister Sarah both won scholarships to the then non-co-educational Fort Street Boys and Girls Schools, and then to Sydney University.
[3][5] He set an Australian record for the hammer throw in 1935, and represented Australia in that event at the 1938 then "British Empire Games".
Howard went on to become the 25th and second-longest serving Prime Minister of Australia[3][4][9] More than a decade before his ascent to Prime Ministership, Rosenblum – a lifelong supporter of the Australian Labor Party – said Howard "would have made a wonderful Labor leader of the Ben Chifley type – you know, a thoroughly honest man of the people.
[12] In his later life, Rosenblum assisted Moriah College, the Australian Jewish Welfare Society and other sporting and charitable organisations.