First Stop - S4-E14
Visible crew/equipment: While Lucy and Ricky are lying in the sagging mattress "canoe", when the train passes and their bed rolls towards the bunk bed, the end of the set wall is visible at the right side of the screen. (00:17:30)
First Stop - S4-E14
Visible crew/equipment: After driving all day, the Ricardos and Mertzes stop by a run-down diner then end up spending the night in their shared cabin. While they're all in their beds, the vibration of the nearby train causes the Ricardos' bed to shakily slide towards the Mertzes and then back again. The wires attached to the Ricardo's bed are visible, coming from the hole at the bottom of the left wall, and the leg at the foot of the bed is set in a track attached to the floor, which keeps the bed on course.
First Stop - S4-E14
Visible crew/equipment: The gang stop at the roadside diner was obviously shot in-studio as the bottom seam is quite visible behind the car, and the backdrop shakes a little when Lucy opens the car door.
Answer: According to Snopes.com, there is no definitive answer, but the mid-1960s is the most verifiable date with "The Munsters" being cited as the first, although others claim "The Brady Bunch" showed the first couple seen in a double bed. An early TV show from the late 1940s titled, "Mary Kay and Johnny" is also thought to have shown the married couple's bedroom as having a double bed, although probably not with them in it. However, this was when TV was aired live, and there are no surviving episodes, only anecdotal accounts.
raywest ★
Something that is funny is that in the movie "A Christmas Story," they show the parents having two twin beds in their bedroom. In a real situation, they should have shown them having a double bed. Lucy and Ricky had twin beds pushed together in an early episode, which would have been pushing television boundaries in that time.