Theme: “A Multicultural Tale Along the Old Spanish Trail”

The Annual OSTA Conference for 2023 will be held October 19th through 22nd, 2023
at the Mission Inn Hotel & Spa Riverside, California.

Conference fees include registration for Thursday Evening Reception, Presentations on Friday and Saturday, and Sunday Field Trips. Price includes Continental Breakfasts, Lunches, Refreshments, and Dinner/Entertainment at La Gran Fiesta Dinner at the Trujillo Adobe featuring Mariachi Band and Ballet Folklorico Dancers.

Room Reservations: Rooms are no longer available at The Mission Inn, but Additional Rooms For the Conference can be booked at The Hyatt Place or The Hampton Inn.

Room Blocks for the Old Spanish Trial Conference are open at The Hyatt Place at a discount rate of $199.00 (Breakfast Incl) at:

The Hyatt Place, Riverside Downtown
3500 Market Street, Riverside, CA 92501
Call Reservations at 1-888-492—8847

Reservation for The Hyatt Place is at https:/ id=G- OSTA#quickbook
Room Blocks for the Old Spanish Trial Conference are also open at the Hampton Inn a discount rate of $199.00 (Breakfast Incl) at:

The Hampton Inn, Riverside Downtown
3505 Market Street, Riverside CA 92501
Call Reservations at-951-788-5000


Reservation for the Hampton Inn is at


The Cut-Off Date to get Reservations made and to obtain this Special Rate is October 5, 2023!
Any Reservation Booked After This Date is Subject to Availability And There is No Guarantee That The Discount Rate Will Be Available.


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Or click here to print and mail in your conference registration.


Early Bird Registration (ends 9.1.23) Members $205 per person
  Non-Members $250 per person
Conference Registration (after 9.1.23): Members $245 per person
  Non-Members $280 per person
NEW OSTA Membership Discount ($5.00)   $35 per person
Mission Inn Saturday Banquet Dinner (optional) 

  • Rosemary Baked Chicken
  • Filet of King Salmon
  $85 per person