Suggestions, corrections in blue.

Originally Posted by
jkl
Sub: Protecting a question bank
Dear, Martin,
While you were on vacation Professor Rose came to the Libray on March 21, 2007, to complian about a "question bank" that contains protective materials . He reuquested that the Library withdraws the book from circulation collection. Prof. Rose said she would like to be contacted by the Library if there is any questions or concerned arrives about it. Professor Rose's contact informations is as follows:
Prof. Rose K.
Dept of Computer Science
Email: XXX
EXT. XXX
Thank you,
Library Assistant
M. Sue
Subject: Protecting a question bank
Dear Martin,
While you were on vacation, Professor Rose came to the library on March 21, 2007, to complain about a "question bank" that contains protective materials. He requested that the Library withdraw the book from circulation. Prof. Rose said she would like to be contacted by the Library if there are any questions about it. Professor Rose's contact information is as follows:
Prof. Rose K.
Dept of Computer Science
Email: XXX
Phone number: XXX