Grinker was born in 1957 in Freeport,
New York, USA. While still a student at Parsons School of Design,
she began her photographic career documenting the rise of the 13-year
old future heavyweight championship boxer Mike Tyson. She joined Contact
Press Images in 1988. Since then, in addition to her reportage of
events such as the destruction of the World Trade Center, she has
delved into long-term book projects including The Invisible Thread:
A Portrait of Jewish American Women (Jewish Publication Society),
and most recently, Afterwar: Veterans from a World in Conflict
(de.MO 2004), her 16-year project on veterans of the last century.
She is based in New York City.