This is a reissue release using an original 1960 stereo jacket, without ® adjacent the Verve logo on the front and a MONO sticker over Stereo.
Ella Fitzgerald - Sings The George And Ira Gershwin Song Book - Volume Three is the reissue stereo release, unstickered with the same back jacket top right layout.
The Mono sticker over the Stereo on an older Verve [no ®] jacket is a distinguishing feature.

Black silver T Verve labels with ® adjacent Verve logo-right, MGM Records bottom rim text, in use 1961-1972.
A similar label text and layout to the stereo version of this reissue, Ella Fitzgerald - Sings The George And Ira Gershwin Song Book - Volume Three.
NO Stereo on the labels and a different pair of matrix numbers.
Labels for the reissue releases' have the same catalog numbers.

Pressed by MGM's own, MGM Record Manufacturing Division identified by the stamped symbol of an [ankh] in the deadwax.

Recorded over a span of ten sessions, January thru July 1959. The material was released as five individual "Volume"s, MGV 4024-4028 and MGV-4029-5. Below are the session dates and locations, the recording matrices and takes used for Volume III.
Los Angeles, CA, January 5, 7 & 8, 1959
22617-5 Soon
22622-3 A Foggy Day
22624-2 I'm Biding My Time
22629-3 Clap Yo' Hands (Clap Hands, Here Comes Charlie)
22633-3 I've Got A Crush On You
Los Angeles, CA, March 18, 1959
22750-5 Of Thee I Sing
Los Angeles, CA, July 15, 1959
26436-7 Boy Wanted
Los Angeles, CA, July 16, 1959
26441-3 Strike Up The Band
Los Angeles, CA, July 17, 1959
26446-5 Stiff Upper Lip
Los Angeles, CA, July 18, 1959
26451-6 For You, For Me, Forevermore