Waagmeester Canvas Products - Banks Sails loft, Gary recommended

North Winds Canvas - North Sails loft, services Cal 20 fleet

As far as I know, both these firms send design specs to parent company and sails are made offshore

Pineapple Sails - make their own sails, might give them a try for a headsail (reefable genoa?), or an asym cruising spinnaker

Port Townsend Sails - High quality traditional loft.