did you ever find your grandparents trailer?
I have a very similar story! I too am looking for the two Airstream trailers my grandparents had.
1971 Land Yacht, 23', Rear Bath, Double Bed, made in JC Ohio, serial# 3439
(L23 D1J 3439)
1977 International, 27', Rear Bath, Double Bed, made in JC Ohio, serial# 1401
(127 D7J 1401)
Their WBCCI # was 25098, and I actually just registered with it, so it is now mine also!!
I am now looking to see if I can actually find the trailers!!
Ashley Hitzig
WBCCI #25098
1967 Overlander 26' (A'ole hopohopo)
2016 Tahoe LTZ (Blacksheep)