The Teesside Archives in Middlesbrough currently store the CIE Minute Books from 1864 to 2001, and the published Proceedings of Meetings from 1868 to 1942. A second copy of most of the Proceedings is held at Middlesbrough refernce Library, and both sets of copies are available for the public to view on request.
The Proceedings have been scanned by a specialist company, and are now available on CD at the Teesside Archives. They are now searchable in this format, a great aid to research. The Minute books have also been scanned, and will also shortly be available on CD at the Archives (May 2017).
NB - The President's Board at MPI (photograph below) has been found to contain errors between 1900 amnd 1930. A spreadsheet of Presidents is being compiled from the Archive Proceedings.
A spreadsheet of past lectures from 8/5/2007 to the end of the 2015-16 season is attached also.