Siegel's barrage of letters to National Comics employees at all levels on November 22, 1951 was likely widely discussed in the company's offices. This one to editor Murray Boltinoff was never opened as Boltinoff was likely made aware of its contents and gave it to the company's legal department still sealed. Letter is sealed in its original mailing envelope and is presumed to be in good condition. 6 1/2" x 3 1/2".