In case you need a vendor, this online one was posted about on Fred Espanek's FB page (former Astrophysicist at NASA Goddard Space Flight Center and expert on anything eclipse). According to their website, they can ship out in time so long as you order by the 14 th. https://solarfilterhub.com/
Patti A. replied:
The https://www.facebook.com/57593633364American Astronomical Society suggests these vendors (scroll down the page until you see "Solar Filters for Telescopes, Binoculars & Camera Lenses" - https://eclipse.aas.org/resources/solar-filters - I think I would trust this site more.
Our non profit org and its board of directors are seeking someone that is good in photography and can help with our org. It does not have to be a professional...