{Images #994329 & 994330} was pressed first, up to the end of 1941. The instrumentalists' roster was listed in 6 point No. 11, a serif font used in tandem with 6 point Gothic Condensed No. 4 which was used in one way or another by Columbia East Coast pressing plants thru mid-February 1968. {Image #412897} would have been later 1942 (same serif type seen through the way overprinting) and {Image #426767} was from around 1943, by which time a whole 'nother label printing job was struck; the sans-serif typeface mentioned before was now used for who played on the record. (And that's not counting the differences in fine print below the 'COLUMBIA' as atop the spindle hole, or the 'Trade-Mark' right below the notes and microphone on {Images #994329 & 994330}, that disappeared by the time {Images #412897 & 426767} were pressed.)
Both typesetting jobs were from Bridgeport, CT, so 'twas all in the family, as they say.
@SeberHusky "Night Special should be the A-Side and Back Beat Boogie on the B-Side."
One may discuss this, based on the matrix numbers (LA 2052 for "Night Special", LA 2054 for "Back Beat Boogie"). Still, "Back Beat Boogie" was the more popular number, listed as a territorial favorite again in Billboard in March 1944, and there is no explicit A/B designation on the labels.
"The year should also be 1939."
Both sides were recorded on the same day, on Nov 30, 1939. They were not released in 1939 though, but on the day listed above and taken from the records of Columbia.
"This is based on the information Discogs has on this record: http://www.discogs.com/Harry-James-And-His-Orchestra-Night-Special-Back-Beat-Boogie/release/1881480"
Discogs may be an additional source in individual cases, but it is not a reliable source on a general basis.