^^^Excellent post Beaudry! I cringed at the great loss at Ninth & Hope. -so sad.
below: The mansion of Secondo Guasti at 3500 West Adams Street as it appeared in 1910.

usc digital archive
below: A view of the exquisite interior.

unknown
below: After Guasti...the mansion was owned by none other than Busby Berkeley.
Luckily the mansion survives to this day albiet with a parking lot instead of a front lawn.

wikipedia
below: Another view when the front lawn was NOT a parking lot.

unknown/perhaps LAPL
below: A contemporary aerial view from google street views. A 'spiritual' group now owns the property.

google
below: One last view from google street views showing the mansion behind the parking lot on it's front lawn.

google street view
Let me insert that Busby Berkeley GIF again.
Mr. Berkeley was known to throw legendary parties at this address in the 1930s.

b_berkeley