On May 11, 1905 it was reported that 500 people were killed by a tornado in Snyder, Oklahoma, and that Amundsen sailed through the Northwest Passage. According to NOAA, 1905 was one of the coldest years on record.
11 May 1905, 1 – The San Francisco Examiner at Newspapers.com
Global Time Series | Climate at a Glance | National Centers for Environmental Information (NCEI)