There are many places where the Passport to Your National Parks for Stonewall National Monument can be obtained (please check each individual site's hours of operations on their websites):
The Stonewall Inn at 53 Christopher Street
The inn is a private business and working bar; patrons must be 21 to enter.
The Lesbian, Gay, Bisexual &Transgender Community Center at 208 W 13th Street
The Center is open Monday –Saturday 9:00 AM to 10:00 PM and Sundays 9:00 AM to 9:00 PM
African Burial Ground National Monument at 209 Broadway in the Ted Weiss Federal Building