George A. Barton, Miscellaneous Babylonian Inscriptions… (1918)
“ It is more probable that a foundation cylinder would be placed beneath the structure when it was first constructed than when spots in its worn pavement were repaired. It is, accordingly, a plausible conjecture that our cylinder was written early in the reign of Naram-Sin. In that case it is probably half a century older than the pyramid text of Unis and is the oldest extended religious expression that has survived from any portion of the human race. ”
