Bitsavers
http://bitsavers.trailing-edge.com/pdf/national/imp/4200021C_IMP16C_App_Jan…
 is same manual..
the 16 P is the machine in ebay.  yea  a beauty.
Ed#
In a message dated 1/2/2017 9:28:59 P.M. US Mountain Standard Time,
COURYHOUSE at 
aol.com writes:
SMECC's book is on 16 c
talks about adding front panel and display  etc... 16 sw and 16  led  book
dated jan 74
16c seems to designate  the card  maybe  16 b is inclusive  of  PS an add
on panel and case..
also have a 8C book too.
ED#  _www.smecc.org_ (
http://www.smecc.org/)
Odd I was just  going though a crate  3 hours ago... what are  the odds
In a message dated 1/2/2017 9:15:05 P.M. US Mountain Standard Time,
couryhouse at 
aol.com writes:
I have manual.
Sent from AOL Mobile Mail
____________________________________
On Monday, January 2,  2017 Josh Dersch <derschjo at gmail.com> wrote:
On  1/2/17 7:58 PM, Brad H wrote:
 -------- Original message  --------
 From: Josh Dersch <derschjo at gmail.com>
 Date:  2017-01-02 7:37 PM (GMT-08:00)
 To: "General Discussion: On-Topic and  Off-Topic Posts"  
<cctalk at
classiccmp.org>
   Subject: Re: National Semiconductor IMP mini
 On  1/2/17 7:22 PM, jim stephens wrote:
  This system looks pretty  interesting, though
pricey. I'm thinking it
 is going to be a  development machine as all the switches and display
 would not  probably have been on a production machine.
 I don't  think National made many minicomputer format machines, in
 their  history, someone correct me. That might make this pretty rare
 on  that front as well.
 thanks
  Jim
  Beautiful-1974-NATIONAL-SEMICONDUCTOR-COMPUTER-model-imp-16p/
 
http://www.ebay.com/itm/252700755919
   Yeah, it's pretty cool but I don't think the seller has reasonable
  expectations for actually selling it -- the auction started (I  believe)
 at $1500 (which may have been a reasonable price), then the  seller
 raised it to $2500, now it's at $3500 (which is fairly  outrageous, in my
  opinion). I'm not sure what his strategy  is.
 Bitsavers has manuals (of course...)
 -  Josh 
 I think he figured toggle switches and lights = $$$$. He might  be
correct, given the obscene money I've seen laid out just for a PDP 8/e
faceplate.
You never know a) what will motivate a collector and b) when just  the
right collector for a given item will show up. Every day I thank my  lucky stars
they didn't, for whatever reason, show up for my Mark-8  boards.
With the "No shipping cash on pickup" proviso the seller  provides, I
feel fairly certain no one's biting. But I've been surprised  before...
-  Josh