Johanna, Now please don't put him into shock with an Infact poster.  There
are some lovely (not offensive - I don't mean Infact posters are offensive!
) just some some middle of the road posters.  I readily think of:

WIC poster: BF babies ...are happy, grow so well, small so  good, let mom
rest
LLLI poster of 16 moms from various cultures ..Breastfeeding is the best
thing in the world.
BF Mothers of Lancaster County..18 pix of ethnically diverse moms (one with
triplets!)
Infact poster of trash...A BF Baby leaves fewer leftovers
posters from Indiana BF Promotion project
Any of Phildelphia posters
Iowa state ..BF babies benefit the whole world
LLLI/Kiwanis poster in Eng & Spanish.

Sorry if I have offended anyone, but we want to win them with honey, not
shock.  Waiting to paper the office walls for August BF Month and wear a
different Tee every day of the month (Thanks Linda).  Sincerely, Pat in SNJ