I have a 1962 trailer and the gray strips which hold the window glass in place are falling out. Where can I get new ones?

The strip you are referring to are the glass retainer strips or "glazing", and there were numerous styles over the years. Replacement material are available from Vintage Trailer Supply for the 1950 to 1965 windows, including both sizes of the HallMark windows. The material used on 1966 to 1996 windows is still available from Airstream dealers.  more