As I was reading chapter 4 (Fowler, 2014), on page 52, second #3 (about low response rate), it mentions a “night telegraph letter” as a remedy. Having never heard of that, I naturally looked it up…
I’m assuming it’s related to this?
I suspect it’s no longer available since Western Union shut down telegrams in 2006. Fowler’s latest date is 2014… maybe I had better let them know, too! Hahah! :-)
Learn more here: https://en.wikipedia.org/wiki/Telegraphy#Telegram_services
Fowler, F. J. (2014). Survey Research Methods (5th edition). In Sage Publications, Inc.