05/06/1975
https://www.presidency.ucsb.edu...
"I do hereby proclaim Monday, October 7, 1974, as Child Health Day."
"I do hereby designate Wednesday, October 9, 1974, as Leif Erikson Day."
"I invite the people of the United States to honor the memory of Leif Erikson on that day."
"Let us draw inspiration from the indomitable spirit and undaunting determination of Leif Erikson."