Nathan Hale Library will be closed for renovations May 18-23 and will reopen May 26. Holds may be picked up at Schusterman-Benson Library.
The Oklahoma Tax Commission has a listing by city of all Oklahoma Tag Agencies.
There is a tag agency downtown: Downtown Tulsa Tag Agency, LLC, 201 West 5th Street, Suite 110, Tulsa OK 74103; Phone: 918.582.8247. Their hours are: Monday - Friday, 8:30 am - 5:30 pm.
Source: Oklahoma Tax Commission web site.