SYCAMORE - Mohawk Community Library is replacing lost library cards at no fee to patrons through June 11. As of May 25, patrons are to be required to have their library card with them at checkout. Due to changes to the library computer system, the library no longer is to be able to look up a patron's name in the system. If patrons have something to place on a hold, it needs to be placed before the May 25. After that date, there is to be a shut down of the system card catalog. The card catalog is to be down until June 11. Patrons still are to be able to check out materials throughout the transition.