Can we go back to the "ice machine" question for a moment.
I was told by my mother, that my grandfather was sent by his father, representing a Chicago/Northern Illinois firm, as a lead machinist to install refrigeration equipment at the summer palace in St. Petersburg. The installation (supposedly) began in late summer 1916, but was interrupted in 1917 ...
The family was originally Danish, but were apparently polyglots (including Russian). The refrigeration equipment company was represented in Russia by Y. Sommersalo & Co. (Helsinki), and W. O. Lucas Co. of Chicago, Riga, Berlin, Helsinki, Oslo and St. Petersburg. I wish I had more details, and a complete paper trail. I only have applications to the U.S. State Department, asking for a specific visa to travel to Russia (as was needed by all travelers during WWI),.