Heating Ventilating.

I^ International Heating & Ventilating Exposition THE Am CONDITIONING exposition Permanent Address--Grand Central Palace, New York 17, N.

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Air System Equipment Air Filters and Cleaners Continental Air Filters, Inc. 2524 Helm Street Louisville, Kentucky THE CONTINENTAL AUTOMATIC SELF-CLEANING AIR FILTER -- now being used by many nationally-known companies (names on request)--has three entirely unique features: Revolutionary new filter media, Ferris-Wheel action, and positive, effective self cleaning.

720 CHAPTER 33 . 1931 Guide and for nuisance abatement.

Publications Domestic Engineering Publications 1801 Prairie Avenue, Chicago 16, Illinois EFFECTIVE 2-WAY COVERAGE OF THE HEATING, PLUMBING ANI AIR CONDITIONING FIELD DOMESTIC ENGINEERING MAGAZINE DOMESTIC ENGINEERING means leadership!

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ABD00115847 Federal Register / Vol. 57, No. 30 / Monday, February 24, 1931 / Rules and Regulations 6405 (ii) The Identification of any previous covered process consistent with the paragraph (Q of this section.

pyrocLor MonsantoTRANSFORMER COOLANT BY Pyroclor is Monsanto's brand name for its fire resistant transformer askarel.

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FILE NAME Owens Illinois Library OWL DATE 1931 DOC OWL009 DOCUMENT DESCRIPTION Relevant Article & Abstracts from The Journal of Industrial Hygiene and Toxicology THE JOURNAL OF INDUSTRIAL HYGIENE EDITORS DAVID L.

FILE NAME: National Safety Council (NSC) DATE: 1934 Dec 26 DOC#: NSC316 DOCUMENT DESCRIPTION: Letter from Asbestos Paper and Allied Products Division to The Ruberold Co.

FILE NAME: US Gypsum (USG) DATE: May 11, 1937 DOC#: USG025 DOCUMENT DESCRIPTION: 1937 Letter to JS Offutt regarding Dr.

FILE NAME: Visible Dust (VDT) DATE: 1937 June DOC#: VDT005 DOCUMENT DESCRIPTION: Article from Trade Journal UKj < c- I C.UU-11 J J ' O J l-nwllM., , nuliJV J ^ Q sM a*a& !!

FILE NAME: Metropolitan Life (ML) DATE: 1937 Aug 30 DOC#: ML067 DOCUMENT DESCRIPTION: Letters to Dr.