Mies Barbara Wright,
Hopkins Harine Station,
Pacific Grove. California.

Dear Barbara:
Here are some of the references I promised to send you:

a) sarked on accompanyincs sheet
b) alaa:

Ryan and Schneider- Genetios 34:72-91 1049
wroce Nat Acad Sei 34: 425-435 19048

Lindegren & Raut- Anne Moe Bote Gardens 34: 75-80 1947 and
Raut - Genetica, last few months.

Zemenhof- 1946, Je Bact. 51:351-361
These papers all have references to other pertinent work.
ce) less well analysed: ~

Dickinson ref. 25)
Strandskov ref. 92 cited and discussed in "Bacterial Variation”
MeIlroy et ai 68) = ame Reve Miorob. III: 1-22 1949,

d) Neurospora - Ryan and Lederberg, Proce Nate Acods Sed., 32:163-73 1946
9 1936
6) I don't know how zest relevant they are, but the ohly credible examples
I can think of offnand of heritablo changes induced by specific environ-
mental conditions are found in:
1} Sehate-Provasoli-Hutner streptomycin on Buglena. Reference?
2) Someborn;Preer various agents om Faramacium: vide Amer. Naturalist,
dan, 1948
3) t? various authors: aparabasal ind4viduals by treatment with
trypanocidal drugs
4} type transformations - reviewed in Heredity, 1948
5) infeotion with latent virva (lysncenicity) ask Elde.

f) Jorner Braun's review, and Luria's, will hava, as you Imow, « food deal
of backecround material.

Since leaving PG we spent some time at Stanford, passed through Berkeley,
Suiienxkeruxkarix Yooonite, Lassen Park and finally returned to Berkeley

via Eureka and the Redwood Highway. ve're finally settled in a larre, com
Fortable house in the hills. By now, van Niel will probably have confirmed
his dictrust of ENB - Zinder wrote that he had sent it out. The cultures for
recombination will be sent out in a day or two.

With best regarde from Esther and myself,

Sincerely,

Joshuc Lederberg