They all have his exact date of death as 6 April 1960.
Charles E. Carper Jr. cites "The Carpers of Carper Valley" by Janice M. Carper & Lois Carper Marbert, 1987.
Searching for that title led me to http://geneavillage.com/cecjr2/index2.htmhttp://geneavillage.com/cecjr2/index2.htm which looks like the book in web format with a horrible background. (Horrible if your eyes are bad; dark purple with black text.) You'll have to squint and bear it or use "Select all" to highlight the text, or select all and copy the text into Word.
The fact you didn't mention a county - or even a continent - and you hadn't found RWWC yet makes me suspect you are a beginner. If so, you might find some of the tips and links on http://www.tedpack.org/begingen.htmlhttp://www.tedpack.org/begingen.html useful