I'm looking for the birth and death years for the mathematician Orrin
Frink Jr. He was a professor at Penn State in the 50's and 60's. This
is all the details I have right now.

Hello.

Prof. Orrin Frink Jr was born in 1901.  He died in 1988.

From the Library of Congress catalog:

"Frink, Orrin, 1901-
The operations of Boolean algebras, by Orrin Frink, jr. ..."
http://catalog.loc.gov/cgi-bin/Pwebrecon.cgi?v3=1&DB=local&CMD=010a+27007127&CNT=10+records+per+page

Additional source:
"In 1928 Professor Orrin Frink (b.1901 ) head of the department of mathematics
at Penn State University..."
source: Practical Chess Ending:
http://members.aol.com/brigosling/psitn036.htm


From the Social Security Death Index:
ORRIN FRINK 	
born 31 May 1901
died 04 Mar 1988
http://ssdi.genealogy.rootsweb.com/cgi-bin/ssdi.cgi?lastname=frink&firstname=orrin&middlename=&ssn=&zip=&start=00&issue=&birth=&death=&bmo=&dmo=&lump=&bda=&dda=&nt=exact&ls=&lc=&lct=&lus=&luc=&luct=&stat=
(Orrin Frink is such an uncommon name, that the man born in 1901 must
be the one you're seeking)

------
search strategy:
loc catalog
ss death index

I hope this helps.

Excellent work. This is exactly what I was looking for.