I have bought my wife a 4x5 Crown Graphic with a Graflok back for Christmas, but it does not have any film holders. What makes/models are good ones to use for this back?
all modern (since at least the 1950's) 4x5 film holders will work fine. This includes, Riteway, Fidelity, Lisco and even Toyo. Most folks prefer plastic holders for 4x5.