Re-published by Warlord Games is Eduard Wagner's, European Wwapons and Warfare 1618-1648, which I believe is a reprint of the book featured below:
This book seems to be packed with brilliant illustrations and would be a 'must have' for anyone new/not so new to the period! I can't say that i've ever read the book but I have sen copy before and it is packed with illustrations and well worth the £25 that Warlord are asking for.
Out of interest a quick look at the Amazon page revealed to me that for folk into other periods, Eduard Wagner is also responsible for writing or co writing the following books:
Medieval Costume, Armour and Weapons, Eduard Wagner, Zoroslava Drobná and Jan Durdík
Cheers for now.