It humors me to think that in the era before pornography shops, this was how gentlemen got their rocks off. I would love to have a "Marvelous Movie Vuer" just as a relic of that time. If anyone know where to find one, or wants to send one to me as a gift, I would be more than happy to accept it as a gift. You know, for historical research purposes.
Apparently, these mail order novelties would be shipped to men in anonymous brown paper-wrapped parcels, delivered as discretely as possible. I can imagine that any parcel showing up in brown paper soon became noted as pornography to a select few, but maybe we were more naive during this era.
But times changed. Stag-loops for a quarter and adult theaters popped up (pun intended), and with the advent of video cassettes, porn was available in giant, oversized VHS boxes. This of course was replaced by the ubiquitous DVD. And now we get our porn through the internet.