Historical Events
- 1st regular US airmail postal service between NY, Philadelphia & Washington, D.C.
- 43rd Preakness: Johnny Loftus aboard War Cloud wins in 1:53.6
- Greeks troops land at Smyrna
- The Finnish Civil War ends
Event of Interest
Washington Senator Walter Johnson pitches 1-0, 18 inning game

Walter Johnson
Famous Birthdays
- Eddy Arnold, American country music singer (Cattle Call, Anytime), born in Henderson Tennessee (d. 2008)
- Joseph Wiseman, Canadian actor (Dr No, Viva Zapata, Les Miserables), born in Montreal, Quebec (d. 2009)
1918 Highlights
About May 15, 1918
Day of the Week: Wednesday
How Long Ago? 102 years, 8 months and 6 days
Leap Year: No
Generation Greatest Generation
Chinese Zodiac: Horse
Star Sign: Taurus