Vegetation Control Divn.
Fort Detrick, Md. 21701
'74 February 14 —

Dr. Joshua Lederberg

Dept. of Genetics

Stanford University, School of Medicine
Palo Alto, Calif. 94304

Dear Dr. Lederberg:

Dr. Dennis H, Rouvray, in his letter of Feb. 4th just received, reminded
me of his task a year ago (both letter-copies enclosed), that he is “now
putting the finishing touches to (his) review on isomer enumeration methods
for Chemical Society Reviews," and expects "to be sending off the final draft
in about three week's time." In my quick acknowledgment, I promised to send
all information I could gather today-- but I think it more important to post
you about his immediate need for all of your citations on the subject-- like
the brilliant achievements Dennis Smith and Larry Masinter demonstrated in a
5600-mile terminal hookup at the NATO-CNA Advanced Study Institute near Amster-
dam last June.

Dr. Rouvray cited ten "Suggested Reading" references in his '72 Chemistry
report on "The Mathematical Theory of Isomerism," (Vol. 45(2), 6-11, 1972),
which alerted me to his interest, but he evidently was not aware of your work.
This is the 100th Anniversary year of Arthur Cayley's 1874 paper, which ignited
the whole problem, so I am rushing a chronological checklist of what I have on
"STRUCTURE-COUNTING FUNCTIONS: A Century of Published and Unpublished Reports,"
for his formal review report, and for your shared interest. I hope this will
stimulate more 3-way exchanges than we have enjoyed lately:

While I am gathering old papers for Dr. Rouvray (while assembling the
chronology), I am enclosing a matching set for you-- to discard or expand as
you see fit! This is an update of the note-gathering encouragement you gave
me in your letter of March 16, 1965. Verifying what I said 4 days earlier in
1965, "I will enjoy postal exchanges as swiftly as you care to continue."

a

Sincerely yours,

cc: DHR Bill Wis
Encl: DHR's '73 & '74 letters pi Wii A 7

Old notes on Struc-Countg F. Wm. J. Wiswesser

as

PS: I seem to have mis-field the little-known reference by R, A. Fisher that
you gave me in your letter of March 16, 1965. You also cited "private
communications from D, Barnett of University of Washington, and J. Bosak
of Bratislava in your DENDRAL report. Anything worth quoting on them?

ws - bed Anne stm ta ww Ger,

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