The SAS support website
http://support.sas.com/ has both SAS-hosted documentation and also supplemental technical papers and Sample Programs, one of which I found with using the website's SEARCH facility. A link to this paper is listed below.
Scott Barry
SBBWorks, Inc.
Sample 33918: Read and convert multiple transport (XPORT) files to SAS data sets
http://support.sas.com/kb/33/918.html
BONUS ITEM: Sample Google advanced search argument - limited to the SAS.COM website:
+read +multiple +transport +files site:sas.com