This grudge isn't history.

A runner-up for Queens borough historian has ripped into the eventual pick, Jack Eichenbaum, as "sadly misinformed" with a "profound ignorance" of efforts to save significant sites.

Author Jeffrey Kroessler posted the critical comments online in response to a recent Daily News article in which Eichenbaum said he'd rather be an educator than fight to landmark buildings.

"Sadly, Mr. Eichenbaum is poised to continue the ineffective pattern set by his predecessors," Kroessler wrote on the blog of the Historic Districts Council....