Walter Johnson signed letter portion.  The autograph has been authenticated and encapsulated by PSA/DNA as Authentic.  This appear to be the bottom portion of a Walter Johnson response to a fan letter.  The letter reads "those A's are stepping (?) right along and look great right now, however its a long season and I believe my club will keep right after them.  Thanks for your wishes, Walter Johnson".  The letter has been affixed to a backer paper which has glue residue on the reverse.  A nice clear and legible Walter Johnson signature.