Update June 2019: Ricoh posted an updated list of authorized US dealers:
https://us.ricoh-imaging.com/wp-content/uploads/2019/06/Ricoh-Imaging_Authorized-Dealer-List_eff-June-2019.pdf
Because Ricoh posts just a list of dealer names (often inaccurate or hard to search for), I've created a spreadsheet that lists details about each, including website, city, state, phone and a quick product search for Pentax/Ricoh products.
I've updated the Google spreadsheet:
Ricoh Imaging US Authorized Dealers
There are 16 new dealers in the 2019 list. 13 are telescope/outdoor goods dealers and feature Pentax telescope eyepieces, spotting scopes and binoculars. Three camera dealers were added, but none of them actually have Pentax/Ricoh photographic products listed on their websites.
The official Ricoh dealer list STILL lists about a dozen dealers no longer in business.
Sadly, Creve Coeur Camera, in Creve Coeur, MO has closed. They used to have several locations, and listed a decent selection of Pentax products on their website.
A couple of dealers have also removed all mention of Pentax products and two are expected to close soon.
Hope folks find this useful. Let me know if there are corrections/additions to be made.
Thanks,
Mike