Hessian Jewel Robbery

The transcript narrates the story of Colonel Jack C. Durant and Captain Kathleen Nash, who buried treasure in Germany to protect it from Allied bombing. They later smuggled the loot into the United States, spending a brief honeymoon in Hudson, WI. The couple was eventually captured in Chicago's Hotel LaSalle, just before a fire that could have been fatal.

Where did Colonel Durant and Kathleen Nash supposedly smuggle the loot?

What event occurred the night before the fire at Chicago's Hotel LaSalle?