I read your post with much interest. I am descended from the Glasson family and have extensively researched the Glasson line and as part of that Edwin and his involvement in the bank murders. I must admit that this is the first I have heard of the murder weapon being discovered despite all of my research on the family being conducted since you say it was discovered. I agree that there are very deep wounds in the local community and in all families that were affected by this terrible event.
I am curious as your take on the murder that supports Bertie's claim about the involvement of other men. I would very much like to explore this information that you have.
For the sake of the families involved this information may be better exchanged privately rather than in public forum. If you would like to contact me directly I can reached at firstname.lastname@example.org.