Not entirely sure that those documents are available, but you can try writing to the address given.
The 1926 immigration record for Franz (Frank) indicates he was from Buzias, Romania. It was a spa town in Timis County in what is now Romania.
The German name is Busiasch and there is a website with information, albeit only in German:
http://www.busiasch.net/index.htmlFrom Dave Dreyer's extractions of passenger records for Germans from the former Austro-Hungarian empire (known as Danube Swabians):
SCHUSS Albert -[S200 ]- Age: 21 -From: Busiasch
-DtAr: Monday, 5 Jun 1916 - To: ?, ? -Via: Unk -Ship: Unknown
-Note: Crossed Canadian border at Raymond Montana. From Aladmore SK. Canadian border crossing record [+Jun 1957 Detroit]..
SCHUSS Franz -[S200 ]- Age: 30 -From: Busiasch
-DtAr: Saturday, 15 May 1926 - To: Melfert, SK -Via: Ant/Mtl -Ship: Melita
-Note: Wife, Stefane and kids, Johann 8, Anna 5 and Rosia 3, live in Busiasch and will follow. Canadian passenger ship record.
SCHUSS Johann -[S200 ]- Age: 21 -From: Busiasch
-DtAr: *bad date*, Oct 1913 - To: Milwaukee, WI -Via: Unk -Ship: Unknown
-Note: Born in Busiasch. Father, Albert Schuss, lives in Busiasch. Traveling from Weyborn SK to uncle, Albert Kohl in Milwaukee. Canadian border crossing record [*4 Jul 1892 Busiasch, +17 Feb 1959 Tacoma, son of Albert Schuss and Anna Kohl oo 14 Nov 1915 Glendive Barbara Heim].