"SECRET" Company File on the Consolidated Vultee XB-46 - 1948

Period vintage file comprising 24 pages, 3-hole punched, 8 1/2 x 11" of descriptive data on the Consolidated Vultee (Convair) XB-46 experimental bomber.  The report is contained in a manila file folder marked "SECRET" in two places and with the rubber stamp "Please Return to COMPETITIVE DATA GROUP, Dept 77-25, BLDG 63-4, Plant A-1, California Division".  It seems obvious this is a file from a competitor to Convair but it escapes me to identify which company.  Accompanying the file is a lovely 10 x 4" original photo of the XB-46.  (Likely from Lockheed files as suggested by Dave Mason) Excellent condition.