BIRBiBgECH COLLBQg CRYSTALLWlUEIY wsx30RATORYI

(University of London),

21 Torriaaton Square,

LONSDOM, g*G,l,

Dr. N, el-Conrad,
The Vi oratory,
University of California,
Berkeley
CALIFORMfA,

16th Novembex, 19%.

Dear Ur, FraenkeLConraf,

need of considerable repair, LIQ waited to write to you
until It was in working order,
and I am writing to let you know that I should bs extreine-
ly grateful for an oppoxtunity to study any heavy-atom
desivative of T,#.V,  at any time that you have any available,
In particrular, I think we agreed that it would be USlSfu1
to look first at ?2,bl.V* with X In the -SH posttion.  But
any other derivative in which the forsign body fixed Is
either present In large quantity or contain8 a heavy atom
would be of interest,

Hhen X got back 1 Found my X-ray apparatus fn
           Xt Is now working well,

1 enj~yed very rnuch the disous~ions whiclh I
                 I shall let you

had with you and your ctollsaguee, and ome away from
B8Xkthy with plenty of fxesh ideas,
know lager ofmy reeulte that may merge from them,

Thank you for your help,

Yours eincerely,

Rosalind Franklin,