Here you can see an overview of all manga volumes released in japan so far. If you move the mouse cursor over the cover pictures, you can see the US cover (works for volume 1-6).

FMA Volume 1	FMA Volume 2
FMA Volume 3	FMA Volume 4
FMA Volume 5	FMA Volume 6
FMA Volume 7	FMA Volume 8
FMA Volume 9	FMA Volume 10
FMA Volume 11	FMA Volume 12
FMA Volume 13

Fullmetal Alchemist - Hiromu Arakawa Illustration Collection 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 Edward schreibt einen Brief