Hello: I am participating in the lineage of Gustav Altheim (on behalf of the Altheim family) and have only begun however can pass on that the family Altheim I am studying came from Stryj, Poland and Altheim, Upper Austria. At the moment those from Poland are my focus and have viewed documents of:
1) Filip (Philip) Altheim - came to Canada in Nov. 1921 at age 28
2) Josef (Joseph) Altheim - came to Canada in July. 1921 at age 26, and
3) Gustav Altheim - came to Canada in May, 1928 at age 26
These three Altheim's were the Nephews of Adam Rypple (Ripple) of Altheim, Austria - he also immigrated to Canada and all settled in the Canadian province of Alberta.
Gustav Altheim arrived in Quebec, Canada aboard the ship Andania - a Curnard ship that also sailed from Europe - Britian - New York
Perhaps this information will widen your search.
Nightingale