If you mean this one, it's an “album” but not “LP” :

Eddie Condon And His Orchestra, George Gershwin Jazz Concert, Decca, Personality Series, 4x10” - 78rpm, A-398, (vocals – Lee Wiley)

It was reissued on microgroove in both LP-10”-33RPM (BML-8518) and EP-2x7”-45RPM (ED539.)

Decca was forced to do this because the two “major” record companies also made the record players and, of course, RCA's had no 33RPM setting or smaller spindle for Columbia's product. Columbia same-same & neither company's new gear played the older 78rpm, which also needed a different stylus (needle,) and was the most popular format c.1949.

Format wars - analog style. Cue the 3rd party, multi-speed turntable and optional center (O.C.45) hacks.