By law, letter carriers must deliver library materials. They are not required to
pick up machines. If you have any problem, please talk with your carrier. Should the
problem continue, call your postmaster and refer to Section 135 of the Postal Manual,
based on Public Law 91-375, which provides the rules and regulations that govern items
mailed as Free Matter. Library materials returned to CTBL are excluded from the weight
restrictions established by the post office for placement in street corner mailboxes.
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