Background
Stopler was born Antonie Kassowitz in Vienna, Austria in 1890.
Stopler was born Antonie Kassowitz in Vienna, Austria in 1890.
She studied law in Vienna and macroeconomics in Berlin, Germany, earning her doctorate in 1917.
She fled Europe and immigrated to the United States in 1933 and moved to Canada in 1977. In 1925, the couple moved to Berlin, where Gustav Stopler established a new paper, Der Deutsche Volkswirt (The German Economist). Toni Stolper wrote regularly for both of these publications, particularly on questions related to English and Russian economics.
She became a German citizen in 1926.
After both Theodor Heuss and Toni Stolper lost their first spouses, the two had a loving relationship but never married. Toni Stolper was an active journalist and engaged in social politics.
She co-founded the immigrant assistance organizations Selfhelp and the American Council for Emigrés in the Professions.