Hi, Thanks for the extra lookup drill before Friday's exam. The properties previously shown match the AISC historic database included in the Companion CD w/ the 13th Ed. Steel Construction Manual (1st ed). The CD files are listed as Shapes Databases v. 13.0 Current and v. 13.0H Historic.
As listed: S9X21; Sx=18.9, Ix=84.9 (as noted in the majority (3) of 5 listings); S15X35; Sx=49, Ix=367.9 Note: Both were manufactured by either Bethlehem or US Steel. Sorry, don't know the manufacture dates. Hope this helps to confirm the earlier info if not too late.
Vern08aa