Lawrence--I found one more, and a few others. With the gadget shutoo described, hope you will find all other films you're looking for.
I found "You Were Never Lovelier" (1942) archived as "You Were Never Lovelie". Will be the only result.
I found: "Jolson Sings Again" (1949)--Larry Parks as Al Jolson. Story is so-so, music is very good. Archived as "7006". Should be first result.
"Hidden Hollywood II" (Uncertain of date)--Documentary focusing on discovery and preservation of Twentieth Century Fox lost numbers and songs from 1930's on; narrated by Joan Collins. Archived as "619 B"--should be first result.
"Where Do We Go From Here?" (1945)--Delightful musical fantasy that was scored by Kurt Weill; the lyrics are by Ira Gershwin. Starring Fred MacMurray and June Haver. Archived as "311"; should be the 7th result without changing results to "movies only".
"State Fair" (1945)--Has the only Rodgers and Hammerstein score written for a screen musical. Has the Oscar winning "It Might As Well Be Spring" and other good songs. Film is overly cute, but not to a terminal degree. Archived as "State Fair (1945); should be first result, a black box.
"Three Little Words" (1950)--I didn't list this because I dislike Red Skelton. Fred Astaire and Vera-Ellen are fine, but Skelton gets on my nerves. Archived as "ThrLtleWrds1950"; should be the only result.
"The Barkleys of Broadway" (1949)--Final teaming of Astaire and Rogers. Highlight is Astaire's "Shoes With Wings On" number. Archived as "ThBrklyofBrdwy1949; should be the only result.
"Dames" (1934)--Another Busby Berkeley musical. Worth a look. Archived as "Dms1934" Should be the only result.
One final hint; on archive.org, when you find the film you want, scroll down and toward the bottom right, you'll find the handle of the person who downloaded the film. Click on the name, and you will see a list of all the films that person downloaded. Maybe you'll find other films you're interested in. Best of luck in finding the films I didn't.