Victor kept their Red Seal discs single sided until, IIRC, 1923. Back in '08, Victor was reluctant to convert any records to double sided, but the success of Columbia with theirs forced Victor's hand. OK, thread drift over (again) ... :Pcircularvibes wrote: ↑15 May 2019 04:45I refer to a side as one song. Cylinders do adhere to that standard. Edison payed his performers poorly from what I hear, but duplicating cylinders wasn't as easy as disc records. Columbia and Victor started the double sided disc at around the same time. They charged more for them too, even when the discs were pressed from two existing masters. Most sortcompanies followed suit after the big labels made the change to a two sided standard. The only labels I can remember holding onto single sided discs were Little Wonder up to about 1920 and Durium records such as Hit Of The Week series in the 1930's.
I've bought bulk lots of used 78 sleeves on e-bay before. It's not a bad way to get sleeves on the cheap.