>Works: Constitutional and Political History of the United States (7 vols) + constitutional lectures.
>Parents: Valentin K.H. von Holst; Marie Lenz. Baltic-German setting tied to Reval/Tallinn (Russian Empire).
>Architecture branch (his son)
>Hermann Valentin von Holst (1874–1955) ran Frank Lloyd Wright’s office (1909–11), worked with Marion Mahony Griffin & George Grant Elmslie, part of the Prairie School; designed Condell Memorial Hospital (1928); practiced in Chicago.
>University of Chicago cluster
>Core institutional node with William Rainey Harper (founding president), Albion W. Small (sociology), J. Laurence Laughlin (economics), and University of Chicago Press.
>Contextual philanthropy surface (dashed): John D. Rockefeller, Sr., Ryerson, Hutchinson, Marshall Field—relevant to UC’s creation; these are institutional, not personal claims about von Holst.
>Where to mine next (already placed as dashed “hooks”)
>AAS Proceedings entry for his election (names of proposers often appear—can add them as new confirmed nodes once retrieved).
>Baden First Chamber rolls for exact dates/seat basis.
>UC faculty records (1890s–1904) for appointment letters, courses, committee work, and colleague interactions.
>Prairie School patron lists and Chicago project files for the son’s network.
>Baltic-German and Imperial Russian administration registries for the family’s earlier positions.