Please help me ID these 3 bayonets!

Digging through my grandfather's attic and came across these 3 bayonets. He doesn't remember where they came from so we have no idea what the story is behind them. Just curious if anyone knows what exactly they are. I would also be interested to find an approximate value.

The first (pictures 1,2,3) has a stamp on both sides at the base of the blade. One side reads "US 261396" and the other side is stamped "RIA 1917".

The second (pictures 4&5) has one stamp at the base of the blade that reads "AFH US".

The third (pictures 6&7) has no markings on the blade, but a stamp on the wooden handle that reads "148".

I have no idea how to go about identifying them, so I appreciate any input that you can provide. Thanks in advance!

The first is a M1905E1 cut down, but it looks like it's been butchered and is only 9" now instead of 10". I don't see the scabbard catch in the pictures, and the guard appears to be rather short or altered, I don't see enough room for the barrel bore hole, was this made into a knife?

The second is a little short and is also had a poor attempt to sharpen, not worth much in that condition since the CMP flooded the market with service grade blades. Refer to this link: Hope this helps a bit

Bayo Points 2

A serch for AFH US bayonet finds a lot of information allowing aidentification of the bayonet. I many cases entering the markings followed by bayoent will get you a basis from which to start learning a lot about your unknows if only by pointing to the right page in a larger site like mine. Sarge is right on the first two, the third is a Japanese Arisaka so try Japanese Arisaka Bayonets for info on that one. I ama fraid none are worht much due to condition, but luckiley even un damaged they are fairly common blades so no foul there

That's an early Type 30 (standard) Japanese bayonet with the hooked quillon bent toward the blade.

AFH = American Fork and Hoe ( the source of many off-color jokes back in the day - say it fast), made about 350,000 bayonets from what I can find...otherwise I can add nothing to the other information you've been given.