Thomas D. McLaughlin (born in Oil City, Pennsylvania, on August 4, 1882) was an American architect in Lima, Ohio. His work included the design for Notre Dame College's Administration Building that was built in 1927 in a Tudor Revival architectural style, along with other styles.

McLaughlin studied at Lima College in Lima, Ohio, spent three years at Hamilton College in New York and another three years studying architecture at Columbia University. He worked as superintendent of construction for the Buckeye Pipe Line Company before becoming part of Dawson & McLaughlin with Charles Wilmott Dawson who came to Lima in 1900.

Dawson was born in Plainfield, New York, on December 10, 1867. He studied at Haverford College and graduated from Massachusetts Institute of Technology in 1888, and interned with Henry Van Brunt. His works included the manufacturing plant of The Deisel-Wemmer Company, the wholesale warehouse of The Moore Brothers Company, the Central Building and the Renze Block, as well as many residences such as those for J. D. S. Neely, F. T. Cuthbert, Henry G. Wemmer, W. J. Wemmer, W. K. Boone and G. E. Bluem. McLaughlin joined him in 1906.

Notre Dame's college building was built by the contractor John T. Gill and originally housed the entire college. It was added to the National Register of Historic Places as Notre Dame College of Ohio.National Register of Historic PlacesCampus Map McLaughlin submitted a design proposal for a tower at the Ohio State Capitol.C. Russell Dole The proposed state office building 1927 Ohio State Engineer

After Dawson died, McLaughlin partnered with Peter M. Hulsken to form McLaughlin and Hulsken. Their work was featured in Ohio Architect and Builder volume 18. Hulsken was a native of the Netherlands where he practiced for several years, and studied in Berlin and Paris, before coming to Lima and entering into the partnership in 1909.

McLaughlin's work and work credited to his firm with Charles Wilmott Dawson Lima Memorial Hall at West Elm and South Elizabeth Streets in Lima, Ohio. Credited to "Dawson & McLaughlin" and listed on the NRHP.NRHP listing 79001779 Lima Stadium at 100 South Calument Avenue and East Market Street in Lima, Ohio. Credited to McLaughlin, Thomas D. & Assoc. and listed on the NRHP.NRHP listing #02000219 Savings Building, Lima, Ohio The Ohio Theater Lima South High School (1917), built for $247,000 and expanded in 1923.Lima High School Class of 1955

McLaughlin & Hulsken Lima Club, Lima Ohio Allen County Memorial Building in Lima Ohio Elks B.P.O.E. Lodge at 138 West North Street in Lima, Ohio credited to Hulsken & McLaughlin and listed on the NRHP.Allen County National Register of Historic PlacesNRHP listing 82001865 District Tuberculosis Hospital for the Counties of Allen, Auglaize, Mercer, Shelby and Van Wert Presbyterian Church, Middlepoint, Ohio Baptist Church, Lima, Ohio Lima Mattress Company building Central Union Telegraph building in Lima, Ohio Jefferson High School (Delphos, Ohio) E. W. Jackson building in Lima, Ohio St. James Apartments for L.J. Miller in Lima, Ohio The Marquette residence for E.B. Mitchell in Lima, Ohio Ed Fockler residence in Lima, Ohio Shawnee SchoolOhio Architect and Builder, Volume 18 R.L. Bates residence in Lima, Ohio Carnegie Library Delphos, Ohio Carnegie Library, Lima, Ohio Lincoln School Delphos, Ohio Clarence Leilich residence in Delphos, Ohio Deisel Wemmer Cigar Factory building in Delphos, Ohio C. B. Hunt residence in Delphos, Ohio Carter & Carroll building in Lima, Ohio Gramm Motor Car Factory in Lima, Ohio Design for Delphos Bank building H.G. Wemmer residence in Lima, Ohio Samuel A. Baxter mausoleum in Lima Ohio Lima Locomotive Works garage in Lima, Ohio

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