Thank you for the pictures. Nice looking machine. I need to get to work, but I believe that a manual for a similar machine can be found at
https://www.quiltingboard.com/attach...m-e-manual.pdf I believe it was made by Davis and is considered a Davis underfeed. I think there should be a serial number either on the front slide plate or on the machine under the front slide plate.
Janey - Neat people never make the exciting discoveries I do.