I made this bow for my Doctor. 70 inches long. 55#@28inches.

You are correct.
Eastern Red Cedar is great for bows.
Western Cedar is good only for arrows.
I hated giving this bow away, it was a fast shooter!!
Johnny

That was made from a tree cut down off of a friends farm. As you can see, it is made from the sapwood. The tree yielded many fine staves free of knots, very straight grained. The handle is wrapped with hemp cord. I then sealed it with a mixture of acetone and epoxy glue(I know, not traditional!) for the ultimate waterproof finish. I think Jay Massey came up with this(Bowyers Bible series). I generally do not use arrow rests, but since this bow was for a beginner, I thought it would be a little helpful to have one.
Johnny

Gorgeous work!  I'm impressed!  What's the draw weight?

Looks like a tiny bit of heartwood showing on the handle.  The bow as a whole looks very well tillered, apart from maybe a little bit on the upper limb - was that the position of a knot, or something like that?  Because if it was, then the tillering looks better than I thought before.
  Looks like a nice smooth shooter.  I haven't liked flatbows for very long (I always assumed they'd be low power) but they are great weapons.

The English style is good for elm, birch and ash as well, but all three of those also perform well as flatbows, especially ash.  Osage makes sense, considering it is straight grained and stacking makes sense with it's structure.  Hickory won't make a good longbow, but hickory flatbows are great.  I have used one once, and it was great.  Hickory is not native to the UK though, so it is expensive and I don't like paying to do things primitively.  I used willow to make a flatbow when I was just starting out and had no idea what wood to use.  It wasn't bad, really.
   I think the three best bow woods are yew, osage and mulberry, but all three need a lot of preparation.