<P> Mara then demands that Fred prove that Kris is "the one and only" Santa Claus on the basis of some competent authority . While Fred searches frantically, Susan writes Kris a letter to cheer him up, which Doris also signs . When a mail sorter (Jack Albertson) sees Susan's letter, he suggests delivering the many letters to Santa taking up space in the dead letter office too . Fred presents Judge Harper with three of them (from 21 full mailbags), addressed simply to "Santa Claus" and delivered to Kris, asserting the Post Office has acknowledged that he is the Santa Claus. Harper dismisses the case . </P> <P> On Christmas morning, Susan is disappointed that Kris could not get her what she wanted . Kris gives Fred and Doris a route home that avoids traffic . Along the way, Susan sees her dream house with a "For Sale" sign in the front yard . Fred learns that Doris had encouraged Susan to have faith and suggests they get married and purchase the house . He then boasts that he must be a great lawyer since he proved Kris was Santa . However, when they spot a cane inside that looks just like Kris's, he is not so sure . </P> <Ul> <Li> Maureen O'Hara as Doris Walker </Li> <Li> John Payne as Frederick M. "Fred" Gailey </Li> <Li> Edmund Gwenn as Kris Kringle </Li> <Li> Gene Lockhart as The Hon . Henry X . Harper </Li> <Li> Natalie Wood as Susan Walker </Li> <Li> Porter Hall as Granville Sawyer </Li> <Li> William Frawley as Charlie Halloran </Li> <Li> Jerome Cowan as District Attorney Thomas Mara </Li> <Li> Philip Tonge as Julian Shellhammer </Li> </Ul> <Li> Maureen O'Hara as Doris Walker </Li>

Who played susan walker in miracle on 34th street