[1] From 1912, Haidvogel worked as a registrar for the municipality of Vienna, was a part-time editor at the public educational institute and observatory Urania, and a dramaturge at the Bühne der Jungen.

In the 1920s, he came into contact with the "Weekend and Settlement Movement" of the Viennese municipal Councillor Anton Weber, which also influenced his work.

[3] Although Haidvogel was not among the contributors to the Confession Book of the "Union of German Writers of Austria" (BdSÖ), he was one of the signatories of the "Confession of the Union of German Writers to the Führer", published in Grazer Tagespost on 27 March 1938.

[4] Haidvogel was friends with Josef Weinheber and Karl Heinrich Waggerl.

[5] Haidvogel's work "The Pillars of God" was placed on the list of banned authors and books in Austria in 1946.