Not exactly just a MW item but I think many DXers can remember the exciting feeling when receiving QSL cards and letters from abroad reaching their mailboxes.
Jaisakthivel Thangavel, a professor of Journalism and Communications at the University of Madras. is telling about this in an article published in “The New India Express” (2021-04-24)
It is well worth reading.
Ydun Ritz