I was told that a relative, John Joseph Donovan (sometimes spelled Donavan) volunteered for WWI when he was in his 50s. If he volunteered, would there be a record of him in the draft cards? Or somewhere else? He volunteered, but I don't know if he actually served. Here is his information:

John Joseph Donovan
Birth
1867
New York City, New York, New York, USA

Residence in 1910 — Age: 43
Lowell, Middlesex, Massachusetts, USA

(Age 50 in 1917 and 51 in 1918)

Residence in 1923 — Age: 56
Lowell, Middlesex, Massachusetts, USA: 48th Mayor of Lowell, MA: 1923-1926

Died sometime after 1930