The only time we ever see a piano in the Sanford's living room
The song Fred Sanford sings at the start of the episode is "Carolina in the Morning"
According to Lamont, Elizabeth died in 1949.
The pack of cigarettes on the table is "True Menthol" which was a low tar cigarette and relatively new at the time.
Like a number of first season episodes, this one was based off a Steptoe and Son episode, however, this is the only one that uses the same episode name.