Caterpillar npr , what’s one worth

I’d be interested put me on the list if it’s for sale. Can you give details from what years it has or some type of discription?

I,ll get more info as soon as I can

Scott, if you are able to get it maybe you can make a digital version???? and share?????

I may be the only one,but what is a Caterpillar NPR?

I even Googled it https://acronyms.thefreedictionary.com/NPR

A NPR is a numerical part record, which lists all part numbers at time of publication. Tells you what part is what things parts fits by serial number and weight of part and new part number if superceeded or renumbered. Monthly updateds were isssued, and keeper of npr was to hand update all the changes to appropriate pages. When enough changes were made a new section would be issued. A big pile of paper between 3 to 5 ft tall depending on year published. The most useful for older things are 1948, 1956, and 1961. New one are much less use because older parts discontinued and deleted from list.
Making digital version could be fun, as most nprs are really well used and would not lend themselves to auto scanning.
My 1948 came from an estate auction and almost was trashed. After auction I saw a sheet of paper on ground outside shop, looked at it was a page from a npr. Looking around there was a trail of pages accross yard, ending at trash bin. I asked family if I could dig in bin, said yes. There was an almost complete npr. The paper trail pages suffered from too many forklifts running over them and a few must have blown away.

[quote="brian18a"]A NPR is a numerical part record, which lists all part numbers at time of publication. Tells you what part is what things parts fits by serial number and weight of part and new part number if superceeded or renumbered. Monthly updateds were isssued, and keeper of npr was to hand update all the changes to appropriate pages. When enough changes were made a new section would be issued. A big pile of paper between 3 to 5 ft tall depending on year published. The most useful for older things are 1948, 1956, and 1961. New one are much less use because older parts discontinued and deleted from list.
Making digital version could be fun, as most nprs are really well used and would not lend themselves to auto scanning.
My 1948 came from an estate auction and almost was trashed. After auction I saw a sheet of paper on ground outside shop, looked at it was a page from a npr. Looking around there was a trail of pages accross yard, ending at trash bin. I asked family if I could dig in bin, said yes. There was an almost complete npr. The paper trail pages suffered from too many forklifts running over them and a few must have blown away.[/quote]

Thank you brian18a for the very good explanation.I appreciate you taking the time to explain it.
You sure lucked out on getting your own NPR

Hi All,
I would be intrested in a digital copy as well.

Regards

I’ll let you know what happens , I’d love to have one .

Honestly I had no idea. I was stuck on National Public Radio (NPR) "with Mora Eliason" and could not get any further than that! 😊

Now that it is described, I believe I have heard of one along the way somewhere.

JanM