Lost Irene E. Duell CASE in Buffalo after 1960

Irene E. DUELL CASE was born about 1899/1900 in Mexico, Oswego Co., NY and her mother was Louise LECLARE/LECLAIR DUELL (1852-1943) and father was Alanson C. DUELL (1847-1907). Irene married Charles Bush CASE (1886-1918) in about 1915 and had son Charles Duell CASE in 1916. Charles B. CASE died in France in WWI and is buried in France. Charles D. CASE died at age 16 in 1933 in Buffalo in an auto accident and is buried in the Mexico (NY) Village Cemetery.

I have lost Irene Duell CASE as of 1960 at age 61 in the 1960 Buffalo City Directory and in that year of 1960 she still is working as a clerk at the Niagara Mohawk Power Company and living in an apartment in Buffalo.

Can anyone with access to Buffalo City Directories in print after 1960 track Irene CASE's existence in directories after 1960 and tell me when she no longer appears in a directory and or any information regarding her death and date and place of death, funeral and burial location. In my research, she just disappears. Help please!

Bill BUSH
Lake Arrowhead, CA
bill.pance@verizon.net