This is the list, sorted by courses:
http://titles.mcmaster.ca/text/departments.htm
Most books should be available at Titles. Titles is open during the summer from 8:30 am-7 pm on Monday-Thursday, 8:30 am-5 pm on Friday and 11 am-3 pm on Saturday.
Libraries are open during the summer but all of them are closed on Sundays, with the exception of the Health Science library. More info can be found in the following page:
http://library.mcmaster.ca/hours-info
As for the food, a few places are open during the summer. Bymac, Tim Hortons, Mac Express, La Piazza, Teriyaki , Williams Coffee Pub and Cafe One are all open. The hours of operation for each can be found in the following url:
http://hospitality.mcmaster. ca/loc...d _090326.pdf
Hope that helped!