Try to contact historical and genealogical society in Cordova and Valdez(major city nearest Cordova at the time). Try to get information through LDS church, there is a LDS church in Cordova. Annie would be classed as Chugach or Aleut, so try Chugach Native Corporation in Cordova. There is lists of past postmaster some where, I have seen them in my research. Try the Bureau of Vital Statistics in Juneau for a death certificate for Mr. Shepard and for Annie if she died in Alaska. Also there also birth certificates available. I think the cost is 15.00.