Yes, this is correct
One of Lucas' earliest drafts of the script, penned in 1974, sold at auction in 2013; that script bore the title "The Star Wars" (click to embiggen):
And fan-made scans of the early script drafts continue to support this (click to embiggen all images):
The 1973 treatment, titled "The Star Wars"
The 1974 rough draft script, which bears the title "Star Wars" on the outside cover but "The Star Wars" on the inside:
The 1975 second draft, titled "Adventures of the Starkiller (episode one) The Star Wars":
However, I'm not aware of any official merchandise bearing this title; certainly there wouldn't have been any at the time, because merchandise production was famously limited before the film was actually in theatres, and the title had changed by that time; Peter Mayhew (Chewbacca) posted some images of his copy of the 1976 script on Twitter, where the definite article had already been dropped (click to embiggen):