The form may be obtained at: www.usps.com/forms/allforms.htm.  Scroll down to form number: 3526.

Here is the timetable for publication of Form 3526 depending on frequency of publication:

Publications issued more frequently than weekly, publish no later than October 10.  This applies to dailies, semi and tri-weeklies.

Publications issued weekly, or less frequently, but no more than monthly, publish by October 31.  This applies to weeklies.

All other publications should publish in the first issue after October 1.  This applies to infrequent publications such as quarterlies, bi-monthlies, etc.

All periodical class-authorized publications must publish such a statement.  A reproduction of the Form 3526 submitted to the Postal Service may be used for publication.