I spent a very enjoyable day at MERL as a volunteer helping to sort the collection of drawings from Geo Monro, 8 boxes. These include Rowtrac, Monro Tiller, Monro Minor and Rototiller 35 & 56 plus others not yet identified. It will take many more hours to catalogue all these drawings, but they are a very useful source of information, especially if parts need to be reproduced. I will be going back again in the new year.
The museum is currently closed due to construction of a new exhibition area, see MERl for more details. The shop is still open and so are the library and reading rooms.