Does anyone know if there exists an English translation of von Neumann's early work in operator theory, in particular the paper *Zur Algebra der Funktionaloperationen und Theorie der normalen Operatoren*?

The full citation is

*von Neumann, J.*, **Zur Algebra der Funktionaloperationen und Theorie der normalen Operatoren.**, Math. Ann. 102, 370-427 (1929). ZBL55.0825.02.
EuDML (link to free version) .

If not, are there any expository works in English from around that time period covering von Neumann's work, maybe say pre-1950?