Nothing is known about F. A. Walker other than his only published work is Hot Air Rag
(1907). Unlike in the cases of so many other obscure ragtime era composers, it can reasonably be assumed the name is not a pseudonym as the copyright was granted to F. A. Walker himself before being transferred to his publisher, W. H. Willis of Cincinnati & Chicago.
For data housekeeping purposes he is listed in these webpages as a one-off composer.
Own Library :
||Hot Air Rag (1907)