This is the World War II draft registration card for Sam Posner (also known as Zalman and Samuel), who was Jerome's brother and Esther's uncle.
The 1940 draft registration was for men aged 21 to 45; for the 1942 draft registration, the age range was extended to ages through 65.
Here's a copy of the (modern) transcription copied from ancestry.ca
U.S., World War II Draft Registration Cards, 1942
Name: Sam Posner
Gender: Male
Race: White
Birth Date: 1 May 1882
Birth Place: Mogilew, Russia
Residence Place: Queens, New York (City), USA
Military Draft Date: 1942
Relationship to Draftee: Head
Here are my notes about this document:
The address where Sam and his wife Jennie Posner are living (191-07 Jamaica Ave., Hollis, Queens) is the same address listed in census forms for this family since 1920.
Sam's employer is Queens Laundry, 218-50 Hempstead Tpk., Queens Village.