Thanks for the hospitality!
I'm assuming the tracks on the Fresh Sound release are from Rhythm Plus One (Epic LN3297) and After Hours Jazz (Epic LN3339), recorded June 25, 1956 - does it include all four tracks that Cleveland played on? I'm not exactly sure of "the story" behind these, but I think it was a way to show off Epic's "house" rhythm section, using some great soloists of the day (Gene Quill, Seldon Powell, and Conte Candoli were the others on Rhythm Plus One), essentially as promo for Epic's jazz department.
Fresh Sound - what a great label! Do they have a webpage? I remember looking for one awhile back to no avail . . .
Oh, and about myself . . . I'm a jazz trombonist/pianist/bassist - I'm working on a DMA at U of Miami - I teach at UM and FIU - even though I got an iPod for xmas, I'm hopelessly addicted to vinyl - they're taking over our house . . .