January 21, 1954 Dr.

Th e B.

April 16, 1957 The Legal Aid Society 312 West Kinth Street Cincinnati, Ohio Dear Mr.

A .a.

FRANKJ.

M EM 0 R AHDUM SUBJECT: Surgeon General's Office Lead Warning Signs April 13, 1956 The Gilbert & Barker Manufacturing Company, West Spring field, Massachusetts, seat a Purchase Order for 5000 lead warning signs calling for new dimensions which reduced the area of the sign from 42" to 30.8".

March 14, 1953 Dr.

ETH YL CO RPORATIO N In ter-O ffice Corresp on d en ce St r ict ly Con fid en tial TO: Dr.

'irvi.

vy*f, February 2 7 , 1956.

Ju ly 5, 1955 D r .

IN REPLY REFER TO: H UNIVERSITY OF CALIFORNIA LOS ALAMOS SCIENTIFIC LABORATORY (C o n t r a c t W -7405-e n g -36) P.

ETHYL CORPORATION RESEARCH AND ENGINEERING DEPARTMENT RESEARCH LABORAT ORI ES 1600 WEST EI GHT MI LE ROAD EERNDALE 20.

" O ctob er 21, 1955 M r .

ETHYL CORPORATION 100 PARK AAVVEENN UUEE BBUUIILLDDIINN GG PARK AVEN UE AT 41st STREET X EW YO R K 17, N .