La Plata Argentina - #2

As I try to find information about La Plata Argentina, I am posting several items based on documents from the period when my grandfather, grandmother and their two children resided in the area. This second posting includes two events held in La Plata in 1915 and 1918.

The 1915 event invited the North American residents of La Plata at a ball given in celebration of the 139th Anniversary of the Independence of the United States of America. It was held on July 3, 1915 at the Salon "Unione & Fratellanza" in La Plata. Any information on this venue would be apprecited.

The 1918 event was for Frigorifico Armour de La Plata and was a 3rd Annual Dinner held at the Plaza Hotel in Buenos Aires, Argentina [which is now the Marriott Plaza Hotel, Florida 1005, Buenos Aires - their website mentions 100 years of service, so apparently it was a reasonably new high-end hotel in 1918].

-- Any idea what the back cover message from J. Oden Armour means would be appreciated.

-- The word "Frigorifico" translates to Refrigeration. Armour & Co. was a meat packer and thus refrigeration in this case had something to do with obtaining and/or processing meats. Any assistance as to the history of this process would be appreciated.

Marriott Plaza Hotel, Buenos Aires, Argentina