Table of contents
Brief bio, etc.
Management writing
Technical writing
Writings, interviews, etc., on Internet history and computing
Other activities of mine
For family, friends, xBBNers, ...
Contacting me
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Brief bio of me, BBN, and Internet
After 27 years, I retired from Bolt Beranek and Newman Inc. (BBN) in 1995.
I had joined BBN in 1967 after three years at MIT Lincoln Laboratory
and, except for a year in 1970-71, spent the rest of my business career
with BBN, first as a computer programmer, then as a technical manager,
and then as a general manager. At BBN, I had the good fortune to be involved
in the beginnings of the Internet.
Over the next four years, after my retirement from BBN, I spent a little time with the
Center for Quality of Management
(CQM) and a little time with the
Leaders
for Manufacturing Program at MIT.
The CQM web site included
a photo
of what I looked like as of a few years ago and other information
relating to my participation in the CQM.
These days I
mostly look out the window at the salf marsh near my home.
 Looking out the window from our kitchen
Click for view from outside dining room window
Click for view of front of house (away from marsh)
In 1998 I was pleased to be named to the
hall of fame of my undergraduate college,
San Francisco State, for having been involved in the early days of the Internet. My
friend and classmate
Stan Mazor who was co-inventor of the micro-computer
went into my college hall of fame at the same time. This is
among Stans lesser honors and my only honor. (I love being on the same list
as Annette Benning and Danny Glover, among others see full SFSU Hall of Fame
list; I'm also listed with other notable alumni (under category 2 -- Science and Technology); and I was mentioned in SFSU Magazine, Vol. 1, No. 2, Spring 2001.)
More information
about the early era of the Internet when I was involved can be
found in the following books:
In August 1999, the IEEE announced
that BBN Technologies had been awarded a
IEEE Corporate Innovation
Recognition: For pioneering contributions to computer networking technology
through the development of the first packet switches, the ARPANET Interface
Message Processor (IMP) and Terminal Interface Message Processor
(TIP). This work was done by a team of engineers and
scientists which I had the great fortune to be part of. (Click here
for a copy of the widely published photo of the BBN team I was part
of, and click here for a more close up view of the IMP and team leader Frank Heart.)
In 2001, the Boston History and Innovation Collaborative honored BBN (and our
ARPANET team) and did it again in 2007: click here for more
info
[Note: Much of the information
in the conventional and business press about
my career since my time as a programmer on the BBN ARPANET team is
inaccurate; anyone including something on me in a piece you are
writing might query me directly rather than trusting what has been
written in the past.]
Management writing
Over the years, I have written extensively on management topics.
Much of my effort in this area was through my affiliation with the
Center for Quality of Management:
The book A New American TQM
The book Four Practical Revolutions in Management
The book Breakthrough Management
The Journal of the Center for Quality of
Management
Unpublished and to-be-published papers
Technical writing
I have also written many technical papers, primarily related to my
involvement in computer networking. As time permits or I find them
already on the WWW, I'll post them to this web site or link to them. More
recently I have been doing a lot of writing on the TeX typesetting system.
Technical writing on my "travels in TeX land"
Over the past several years I have published a number of pieces on
my on-going experiences while learning and using the TeX typesetting system.
A fairly complete list of my published technical (and management)
writings is included in my CV
Musings on the history of the Internet and my
computing experiences more generally (and related biographical
data)
- From
San Francisco State University College of Science and Engineering
Alumni Newsletter (Fall 1998)
- How I stumbled into being
involved with the beginnings of the Internet
- On my first years
of work, at Lincoln Lab and BBN with Frank and Will
- On my first two
years of "work" at BBN, before I got involved in the ARPANET
- Observations on
the beginnings of the Internet
- Preface for
publication of the early BBN Quarterly Technical Reports on the ARPANET
project
- Reflections on the 25th
anniversary of the Internet
- Interview relating to the
beginning of the ARPANET, on file at the Charles Babbage Institute
(Center for the History of Information Processing), recorded 6 February
1990: after clicking on this link, scroll down the page and click
on "Walden, David C.", and then scroll down the page and click on "link
to transcript"
- After three years at BBN, I spent a year in Norway developing the
network described in the following paper: Remembering the
LFK Network by Nils Liaaen and me in the Anecdotes section (pages
79-81) of the July-September 2002 issue (Vol. 24 No. 3) of the IEEE
Annals of the History of Computing. Unfortunately, the copy at the
Annals of Computing web site is accessible without charge only
to people who have an appropriate IEEE membership (but check the For
family, friends, etc., category further down this page).
A preprint of the note by Nils and me is available here.
- On the rest
of my years of "work" at BBN
- On losing computer
files
- Note on writing a big
book in LaTeX and then converting it into a format acceptable to the
publisher -- this has been submitted for consideration for
publication by TUGboat, the journal of the TeX Users
Group; if it is published, I will put a link to the published version
here
- Bernie Cosell and I
have written a paper about the creation of Telnet's negotiated
options capability. The official published version is at
http://www.computer.org/annals/an2003/a2080.pdf.
- Some history of the
original ARPANET routing algorithm and what it is called today
- Looking back at the ARPANET effort, 34 years later
- Some Observations and Interpretations of Internet History from 1968 to 1980 -- part of A Technical History of the Internet (an ACM SIGCOMM Tutorial given by 19 voices, speaking for a much larger community) at SIGCOMM 1999, 31 August 1999, Cambridge MA, USA
- Ray Nickerson and I were the special issue editors of two special issues of the IEEE Annals of the
History of Computing on computer history at BBN
- I gave a presentation on the history of the
Internet at the Polyteknisk Foreninghttp in Oslo on September 18, 2007. Also presenting
were Robert Cailliau (co-inventory of the World Wide Web) and Håkon Wium Lie (CTO of Opera Software
and inventory of Cascading Style Sheets for HTML).
Some other activities of mine
Over my life I have moved serially through a number of hobbies, each
one intense for a time, for example, contract bridge, amateur theater,
postal chess, juggling, sail boating, and celtic traditional music.
Ive never gotten super good at any of these, but Ive had a
good time. Click here for photos relating
to the last three of the above list.
Following are links relating to (a) about my only current heavy-duty recreation, movie going, and (b) what seems to be my current avocation, writing
and self-publishing:
For my family, friends, xBBNers
I have posted on this web site some documents that I prefer not to display to
the public at large, because they include names of other people, etc. If you
try to access these documents, you will be asked for a userid and password;
the username is the letter a and the password is the letter b. Please do
not include public links to these documents.
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