Mile Square in Indianapolis in Marion County, Indiana — The American Midwest (Great Lakes)

Indiana Oxygen Company Building

Photographed by Tom Bosse, June 14, 2026

1. Indiana Oxygen Company Building Marker

Inscription. Eight years after the commercial introduction of gas manufacturing into the United States, Indiana Oxygen Company became one of the first manufacturers of industrial gases in the state of Indiana in 1915. Today, Indiana Oxygen Company remains the oldest welding supply & industrial gas company in the United States of America.

Designed and built in 1930 by Fatout Building / Construction Company, this building is a unique example of industrial architecture of the early 20th century. This structure was entered on the National Register of historic Places on March 29, 1987.

Topics. This historical marker is listed in these topic lists: Architecture • Industry & Commerce. A significant historical date for this entry is March 29, 1987.

Location. 39° 45.684′ N, 86° 8.943′ W. Marker is in Indianapolis, Indiana, in Marion County. It is in Mile Square. It is at the intersection of Fletcher Avenue and South East Street, on the right when traveling west on Fletcher Avenue. Touch for map. Marker is in this post office area: Indianapolis IN 46204, United States of America. Touch for directions.

Regionally, this marker is in Central Indiana.

It is also in the American Midwest

and in the Corn Belt.

Globally, it is in North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once the territory of the Mississippian Culture

and also the Northwest Territory.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Indiana Oxygen Company (a few steps from this marker); Calvin Fletcher (within shouting distance of this marker); Fletcher Place Historic District (within shouting distance of this marker); Holy Rosary/Danish Church Historic District

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(within shouting distance of this marker); Indianapolis Farmers Market (about 500 feet away, measured in a direct line); Holy Rosary - Danish Church Historic District (approx. ¼ mile away); Rosenbaum House (approx. 0.3 miles away); a different marker also named Holy Rosary/Danish Church Historic District (approx. 0.4 miles away). Touch for a list and map of all markers in Indianapolis.

Related markers. Click here for a list of markers that are related to this marker.

Photographed by Tom Bosse, June 14, 2026

2. Indiana Oxygen Company Building Marker

Photographed by Tom Bosse, June 14, 2026

3. Indiana Oxygen Company Building Marker

Credits. This page was last revised on June 24, 2026. It was originally submitted on June 20, 2026, by Tom Bosse of Jefferson City, Tennessee. This page has been viewed 7 times since then. Photos: 1, 2, 3. submitted on June 20, 2026, by Tom Bosse of Jefferson City, Tennessee. • Andrew Ruppenstein was the editor who published this page.