Non-fiction books for 3yr old boy

[foodfairy]

DS just getting to the 'why' stage and I want to get him some non-fiction books. He loves trains, planes and got a couple dealing with that but I was wondering if there was anything else out there for little ones? Sure I read a thread on here about a discover the world series with info on different countries for that age? Anything which might lead to discussions other than 'fast one/big one/strong one etc etc. Thanks

[TheDevilEatsBabies]

try Usborne's Beginners series.

look on www.usborne.co.uk for the full details

[chicorita]

How about this ds loved his tool, building site and farm books at that age.

This was great

[OllieWollieWoo]

Saw this the other day on Amazon - may be nice if he likes Thomas?
here