/ LEAD INDUSTRIES ASSOCIATION 420 L exington A venue *New York 17.

L August 18, 1933 Jackson Place Lackland, Ohio Dear Ur A few days ago I received a letter from the Industrial Commission of Ohio requesting me to make an examination and a report in relation to your claim for compensation now pending before the Industrial Commission* In order that I m a y follow out the instructions of the Commission, I should appreciate it if you would get in touch w i t h me or m y secretary at the earliest convenient time so that we may arrange for your examination* I would suggest that you get in telephone communication b y calling University 2 o 6 5 * I f this is impossible, I suggest that you drop me a line and let me know at what time you will present yourself for examination* Any morning the first part of next week after 8s50 A.M. will bo satisfactory to me at the present writing* Y o u can find m y office most readily b y coming to the College of Medicine at Eden and Eethesda Avenues.

Bflyel- FM 11 cts -E tofani - 19 2 9 Age in years 20 - 24 25 - 29 30 - 34 35 - 39 40 - 44 45 - 49 50 - 54 55 - 59 60 - Barrel Fillers Ethyl Age fX 10 21 62 25 74 25 06 17 18 22 fx 0 2 12 6 28 10 0 7 8 73 Kun = -- = 3.318142 1 22 ira2 = 519 = 14 .499826 2 22 (FfUi) 2 = 11.010066 Pi2 = 3.489760 Sigma = 1.868090 x 5 = 9.340450 nr. _ .67449 x 9.540450 _ 6.300040 6.655249 = + .949767 ' mean = 3.518142 x 5 + 22.5 p tp = 39.090710 years _ .67449 x 9.340450 -------- j = --- :---- M 22 6.500040 4.690415 = 1.343173 .

Kettering Laboratory University of Cincinnati Cincinnati, Ohio x Dear Dr.

EMiNGTON A r m s C o m p a n y , i n c .

February 5, 1944 / 12 M r .

January 9, 19^5 r.

N20056 W.

\ Juna 26* 1937 Dr* Kenneth B* Bi&ckfan Sarjara Medical School Child ranfs Hospi t a l 500 Longwood Avenue Boston# Mesa* Dear D octor Blackfan* X as complying with the fu rth er request in your le t t e r of June 22nd by sending you herew ith a rep rin t of Cholak*s a r t i c l e d escrib in g h is sp ectro g ra p h ic method o f lea d a n a ly s is * We are in the process of preparing an a r t ic le fo r p ub lication which w i l l d e sc r ib e the d e t a i l s o f the D lt h i2on?

Mar ch.

Material' Submitted; Required; Cartons [ 1/ . 2. pound) Cow Brand Baking Soda 4.-26-51 by Ethyl Antiknock, Ltd., ijif.

\ ,Villiara 1.

Mardi lu, 194?

January l?

G r a h a m K t >o a r DIRECTOR OF R E S E A R C H Et h y l Ga s o l i n e -Co r p o r a t i o n 2 5 U liO AU W AY Y e w Y o r k Sep tem b er 25 , 1929 P B OXI N R E P L Y P L E A S E R E F E R T O 0 390 Yo n k e r s , U.Y Dr .