The cover table of contents for Volume 21 Number 1 is missing an entry. It should include the following title which appeared beginning on page 258.
A. Maliszewski, On the Differences of Darboux Upper Semicontinuous Functions
The editors apologize for the omission.
"Addition to the Vol. 21 No. 1 Table of Contents." Real Anal. Exchange 38 (1) 257 - 258, 2012/2013.