Actually I first started helping them in the mid to late 80's...not only was I one of the few female collectors, but my speciality was machine mades and I took a LOT of ribbing for that ....until...suddenly, my phone was ringing off the hook for information about machine mades! Larry and Marlow begged me to write a book on machine mades...but as a single mother of 5 and working 4 part time jobs to support my family and keep my house...I didn't have time...but I promised them I would help them all I could....they took me up on my offer and I was so proud of them when the first book came out. But...it was still pretty general in a lot of ways....we spent many more hours of study and conversing on more details such as "the diaper fold" and so then they wrote the same inscription in the next printing....but they were fast learners and wherever or whatever I suggested they research or look into...they did that and much more. The Diaper fold experience occured in the early 90's at the Amana show. I would have wondered too! lol The Marble Lady