Calm down ...
Airstream trailers have used different construction techniques over time. What was done in the 1960s and 1970s trailers does not necesarily apply to 1950s trailers. Because many Forum members do not mention the year or model of their own trailer when commenting on similarities, differences or their renewal experiences, it is up to you to put their comments in context.
Pan head screws are correct for attaching the interior sidewalls in your 1952/53 Cruiser. The rivets down the center of the interior roof are also correct. Take a deep breath. Calm down and use your eyes, your power of observation, and your judgment when inspecting your early 1950s trailer. You are doing good so far. Don't get sidetracked by accepting every post and what "everyone talks about" on the Forums as gospel. Be thankful you only have to unscrew many pan heads instead of drilling out all rivets. Naturally, you will bag, label and save all those original pan head screws for reassembly. Welcome aboard, Tinhopper, and enjoy the process.
Fred Coldwell, WBCCI #1510, AIR #2675
Denver, Colorado - WBCCI Unit 24
Airstream Life "Old Aluminum"
Airstream Life "From the Archives"