Zachariah Joshua Loussac was a Jew born in Pokrov, Vladimir Oblast, Russia in 1882.
In 1907, Loussac fled Tsarist Russia for Alaska, living in Nome, Unalakleet, Iditarod and Juneau before settling down in Anchorage in 1916 to open a drugstore at Fourth Avenue and E Street.
In 1952, Loussac served as an Alaska Territory Delegate to the Democratic National Convention.
Over time, he also served as President of the Anchorage Chamber of Commerce, the Rotary Club and the Pioneers of Alaska.
The first Loussac library was demolished in 1981 to make way for the William A. Egan Civic and Convention Center.