Looking for contact information (snail mail, email, phone) for one
Steve Senn, who wrote several books for kids in the 80's, including
"Spacebread," "The Double Disappearance of Walter Fozbek," "The Sand
Witch," and "Circle in the Sea," among others. Was reportedly working
in advertising in Florida or California in the late 80's. Help!

I found some interesting information that might help. Steve Senn was
born in 1950. His whole name might be Oscar Steven Senn born in August
1950. There appears to be one  Oscar Steven Senn living in
Jacksonville, Florida. May or may not be the famous author.

According to the Library of Congress he has used Steve Senn and Oscar
Steven Senn as writing names.

According to this webpage he was born in 1950:
http://www.public.lib.ga.us/pls/col/gachild.html

An Oscar Steven Senn aged 52 lives in Jacksonville, FL and is a
painter:
http://216.239.33.100/search?q=cache:fX8iBPurPzAC:www.couturiergallery.com/otherartists/senn/sennbio.html+%22oscar+senn%22+1950&hl=en&ie=UTF-8
http://www.guild.com/servlet/Guild/ArtTeamPage?atid=1475

Thanks, folks, it's him. I found his website (www.originalsenn.com) by
myself, so I'm afraid I can't offer the loot, but thanks for the help.