1) "Advanced steelhead flyfishing" by Deke Meyer.

2) "Steelhead Drift Fishing" by Bill Herzog.

for the following reasons:

a) They're about steelhead.
b) They're long reads(especially Meyer's)
c) They're good reads.
d) Lots of good quality color pictures.
e) They're good to re-read.

Footnote: If the wife isn't co-stranded then item #1 or #2 could quite easily be replaced with Playboy!