By 1905, its annual output was 2,500 sides[a] of leather;[4] however, in that year, the company made a fundamental change in its business model.

As the company expanded into other animal products during and after the 1920s, it built factories outside of Wapakoneta, but it continued to use the old tannery at Auglaize and Blackhoof for manufacturing and as its corporate headquarters.

[2] Although the building had been converted into factory and corporate office space by the late 1970s,[3] this was a relatively recent transition; the second floor remained a residence until at least 1969.

In nominating the building for inclusion on the Register, the Ohio Historical Society concentrated on its place as an example of late nineteenth-century German architecture and on its combination of residential and industrial space under the same roof.

As the building has been constantly used as a factory by six generations of Wintzers, it is of significant importance in the history of Wapakoneta and the surrounding area.