They were born in Krajsk [be] and Janowszczyzna (near Olkowicze [ru]), Wilejka powiat, Vilna Governorate of the Russian Empire (now — Minsk Region, Belarus).

Before World War I they emigrated to the United States and after working in a sugar factory, they started their own small business in New York City, in 1918, producing soda water and soft drinks.

On 28 June 1934, Benjamin and Joseph Adamowicz took off from Floyd Bennett Field in New York City and landed in Harbour Grace, Newfoundland.

Benjamin managed to fly lower and regain control (Joseph, writing a flight log in English, surprisingly wrote in Polish at one moment: "God, have mercy on us").

On the morning of 30 June, they crossed a shore-line, but due to fog and clouds, they were unable to determine their position (a result of their poor navigation skills).