Unlock your family history for free at the Bexar County Spanish Archives Unlock your family history for free at the Bexar County Spanish Archives Tejano Moments: ‘People can know the real history of what happened in Bexar County,’ Bexar County clerk says Updated: Tags: SAN ANTONIO – The Tejano Moments series has taught many of us about the untold story of Tejano history and now the Bexar County Clerk’s office is making sure that history is being preserved. The Spanish Archives have an updated facility downtown where all kinds of documents that date back to the 1700s are being kept.