what are those organisation that donate grant to libraries

Answer 1

IMLS - Grant Applicants - Laura Bush 21st Century Librarian Program
Institute of Museum and Library Services ... All applicants for the 21st Century Librarian Program are required to file their applications online through ...
http://www.imls.gov/applicants/grants/21centurylibrarian.shtm

From the search results I gave you earlier. You can change the search results if you need more information.

1. Go to http://www.google.com

2. Type in library grants grantees donors (or whatever search terms you need).

3. Press the Enter key.

4. Read different search results until you find what you need.