Here's a photo from the FaceBook page of my Alma Mater, the University of Alberta.
I remember going to the campus post office almost everyday hoping to receive mail from Hong Kong.
There was no Internet then. It took 7-10 days for an aerogram 航空郵柬 to go from Edmonton to Vancouver for transfer, then onto a plane to HK. Sea-mail 平郵 would take at least 21-30 days. Multiply that by two and that was how long one would get a return message.
For someone on student-visa, long distance phone calls were prohibitively expensive ~ CDN $3 per minute !
Needless to say, I was both home- and love-sick the first year.