April 4, 1929 Dr# Hugh A* Kuhn, 417 First Trust Bldg., Hammond, Indiana Dear Hughs I am afraid that I cannot advise you to use tetraethyl lead In the case about which you wrote in your letter of April 1.

T r-v * r SWEET'S ARCHITECTURAL .

LAW OFFICES OF Cr a ig h e a d , Co w d e n & Smit h CHARLES A.

We asked engineers the nation over -- structural, civil, railroad, industrial and consulting engineers; federal, state, and county engi neers--wbat paint they use and recommend for metal surfaces.

J EXF EiUCSON and his Norse Vikings sailed to \j America through a sea of darkness.

DISTINCTIVE DUTCH BOY INTERIORS Second of4 series ofadver tisements describing inte riors decorated with Dutch Boy white-lead and Dutch Boy flatting oil.

m THE SATURDAY EVENING POST Saptambar 23, 1926 Sky-high or cottage-low $lead paint withstands all weather LEAD f a in r PROTECTS and beautifies the cirv skyscraper.

*\.

- 03 - OTREn. mss.. puw Trad* Ku ii Catagoryt Color] tlunban Quality] Bupont Floor and Bade Enaaal - Sark Stona InUrlor and Ertarlor Tloor, Pored, Dock Paint* and Enamala Gray 631-901 First Piraert 31* Sark Cray TlTlot Lithopon* amorphous Silas Leap Blade Farrlta fallow Orange VaMela 69* aikyd Famish Tahiela Bodied Linoaad-Boaln Tarnish Rosin Solution Briar Cobalt Xaphthanat* Xanganoaa Xaphthanat* "lneral Spirits Uinaral Spirit* Xlundma Staarat* Solution Craoaol* Inhibitor Soya Ladthla Solution Calculated Tiald Manufacturing Loss - ( X) actual Tiald Pounds tiald in Gallons Unit Cost Total Coat 55.87 167.61 70.34 4.00 1.90 485.72 15.68 62.59 6.00 3.00 85.45 2.58 .24 . .02 961.00 1.76 4.71 3.20 .29 .06 64.76 2.16 7.76 .85 .41 13.17 .39 .03 99.55 .1921 .0440 .0165 .0752 .0752 .1179 .0534 .0295 .1126 .0374 .0156 .0348 .0886 .0965 10.73 7.37 o Jfe 57.27 .34 1.35 .68 .26 1.33 .09 .02 S2.04 Coat Analralai Vatarlal Cost par gallon or potmd (Total oost divided by actual ylald) Direct Labor Ooat par (allon or pound Factory Overhead par gallon or pound Bulk Coat par gallon or pound Couplata Package Coat par gallon or pound (Container plus tilling expense) Factory Coat In Package par gallon or pound $ ,32 .05 .LL $ 1.01 ___ t*L t 1.37 OP A nm6U

N Hoveaber 22 19 35* Mr. 3.

I n t e r -Of f ic e Co r r e s po n d e n c e Et h y l Ga s o l in e Co r po r a t io n 25 BROADWAY N e w Y o r k l a r c h 16, 1929 h D r.

April 16,1927.

August 9, 1926 S.

'Try HUMBLE OIL CO., HOUSTON, TEXAS COMPLAINT!

November 16, l$3h Dr.