Images are only used with permission, unless they are already public domain.
Images on this site are copyrighted and cannot be used commercially without prior permission, unless they are already public domain.
Improving the website
This is a responsive website. Please report any errors.
Please report any broken links and mistakes.
All criticism and suggestions for improvements to the website are most welcome.
If anyone would like to add their machine or machines to these pages, please make contact.
I am very much indebted to everyone who has shared their machines on this site. Especially those machines that have filled in a missing link. Thank you.
Wherever possible, I will reference all sources of information.