I had thought that is what you are doing. A pocket reference. ??
It won't be a pocket reference, just a paperback reference. It was going to be a tad larger than Murray's in order for the pictures to be decent.
This would be smaller - 4 1/4" x 7 1/8". Not claiming the pictures will be great.. but you'd have the data with you. Anybody who's ever tried to carry a 6" x 9" Murray's through a gun show will know it doesn't fit in a pocket very well. This would be almost half the size of Murray's.