Rather than comment on James Mackays brilliant article I have kept these in their original pdf format and loaded them to my sever. These can be reviewed ( and copied if you wish) below left. They will open in a new window , so you will need to use your back button to return to this page.
I will be adding new data on the Machin 40th Anniversary (including links) here in due course, in the meantime until I add the content, there are several articles already live online. You may view them on my blog page Machin Mania