John B. Tytus House
Historic house in Ohio. Added to the National Register in 1975, and a National Historic Landmark.

What it is
The John B. Tytus House is a historic house at 300 South Main Street in Middletown, Ohio, United States. Built in 1865, it was the home of John Butler Tytus (1875–1944), who invented a practical hot wide-strip continuous steel-rolling process that transformed the American steelmaking industry. The house was designated a National Historic Landmark in 1976 due to the efforts of Jeri and Pat Rossi, who bought the house in 1970. The house was the residence of the Rossi family until 2011.
Text from Wikipedia, CC BY-SA 4.0.
The record
| Register name | Tytus, John B., House |
| Property type | Building |
| Address | 300 S. Main St., Middletown, OH |
| County | Butler County |
| Listed | May 27, 1975 |
| Listed for | Architecture, Invention |
| Level of significance | National |
| Reference number | 75001335 |
| Type of place | house |
| Style | Romanesque architecture |
| Contributing resources | 1 building |
The nomination form, the document that argues why this place matters, is in the National Archives: Read the nomination ↗
Visiting
| Address | 300 S. Main St., Middletown, OH |
| Coordinates | 39.5133° N, 84.3968° W · Directions ↗ |
| Nearest national park unit | Dayton Aviation Heritage National Historical Park · 25 miles · on Park Atlas |
| Federal campgrounds nearby | Caesar Creek Lake 18 miles · Quakertown Campground 29 miles · Overlook Shelter (Brookville Lake) 32 miles |
Explore
Map
Nearby in Butler County
Local history books for Butler County
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Guidebooks to historic places and travel in Ohio
Titles come from Open Library's catalog, matched by subject heading or by title.
Reference
Questions people ask
When was John B. Tytus House listed on the National Register?
May 27, 1975. It is also a National Historic Landmark, the higher of the two designations.
Source: National Park Service
Can I visit John B. Tytus House?
No public access is recorded. A National Register listing recognizes a place; it does not open it to visitors.
Source: National Park Service
Where is John B. Tytus House?
300 S. Main St., Middletown, Butler County, Ohio. The nearest national park unit is Dayton Aviation Heritage National Historical Park, 25 miles away.
Where is the nomination form for John B. Tytus House?
The National Archives holds the nomination form, the document that made the case for listing.
Source: National Archives
Are there campgrounds near John B. Tytus House?
Three federal campgrounds are within reach. The closest is Caesar Creek Lake, 18 miles away. Quakertown Campground is 29 miles away, and Overlook Shelter (Brookville Lake) is 32 miles away.
Source: Campsite Atlas
Is there cell service at John B. Tytus House?
FCC coverage maps show Verizon 5G, AT&T 5G, and T-Mobile 5G at the listed point. Coverage indoors and behind old masonry is another matter.
Source: FCC Broadband Map
Sources
Location, type and contributing counts come from the National Park Service's National Register spatial data. Listing dates come from the National Register office's spreadsheet where it carries the listing. Construction date, architect, style, photograph and encyclopedia link come from Wikidata and Wikimedia Commons, matched on reference number 75001335. Nothing here is transcribed by hand. The nomination form and photographs ↗ at NPGallery are the original nomination as filed with the National Park Service, and the form is often the best description of the place. The description under "What it is" is the opening of the Wikipedia article, CC BY-SA.