How Do I Disperse HOA Information To Houston Realtors?

I'm the treasurer for my neighborhood HOA and a member of the BOD. We
recently changed our procedures for billing and collecting maintenance
fees and my question is how's the best way to get this information to
realtors and anyone else that needs to know where to mail the
payments? We will be billing our residents with the new information,
but we feel it is also a good idea to notifiy realtors and give them
the new phone numbers for contact information. Many times they have
questions about deed restrictions, late fees, refinance and title
change fees and we'd like to make it easier for them too. I have the
phone number and address for the Houston Area Realtors and I'm going
to call them Monday, but if you can think of another or better way,
please advise.

   Also is there an organization for title companies and/or mortgage
companies?
  
   TIA for any help you can provide.

   -BiJiminy in Harris County, Houston, Texas