Yes, the Declaration of the Facts from Rutherford to the German government/Hitler letter was published in the 1934 Yearbook.
Do you think that this ever factored into why the WT has never caved on the whole 587/607 BCE issue?
After all, if they followed the 587 date, it would buy them an extra 20 years, moving 1914 to 1934. And given the number of historical events that occurred in 1934 (basically Hitler becoming "Hitler" and starting his reign of terror, Soviets joined League of Nations, etc.), they'd easily make the argument that it was because Satan and the demons were cast down that year and started the events leading to the largest and deadliest war the world has ever seen.
If what the WT was doing in 1934 was suddenly put under a magnifying glass as organizationally significant, perhaps these views on Hitler might not look too good.