On January 2, 1906, Carrier was granted U.S. Patent 808,897 for an Apparatus for Treating Air, the world's first spray-type air conditioning equipment. It was designed to humidify or dehumidify air, heating water for the first function and cooling it for the second.
In 1905, Stravinsky was engaged to his cousin Katherine Gavrylivna Nosenko (called "Katya"), whom he had known since early childhood. In spite of the Orthodox Church's opposition to marriage between first cousins, the couple married on 23 January 1906.