Money 90th anniversary of Black Tuesday, which heralded the Great Depression, holds lessons today November 3, 2019November 4, 2019 Nancy Tengler, Special to USA TODAY Comments Off on 90th anniversary of Black Tuesday, which heralded the Great Depression, holds lessons today Oct. 29 marked the 90th anniversary of Black Tuesday and the start of the Great Depression, but there is a stark difference between 1929 and today.