I've written to Mr. Lightfoot but never got a written reply. However,I met him after my first concert and got his autograph. Along with Brink sending me a concert "leaflet" that I sent her and she had gotten him to sign it!
I also sent him a birthday card in 2003 and I signed everbody's line name (that posted here the most of course). You're best bet is,attend a show and wait outside after for a "meet & greet".