I have had no luck finding them in the 1940 Census.
From Emma's 1964 Obituary it indicates her husband George Predeceased her. She was 75 when she died. Emma and George were married in Kings County in 1905 when he was 21 and Emma 18. This would mean George was born around 1884. I suspect that George died somewhere between 1950 to 1963. This would make him 66 to 76 when he died.
The reason I am looking for a telephone book check is to narrow down the time frame (year period) I have to request the health department search their death records for George's DC.
If would you may email directly at firstname.lastname@example.org
on this matter. I can provide you with additional information that may help your death record search for George Klein.
Gary E Baxter