H.J. Heinz(Kobo/電子書)

Glass in Northwest Ohio(Kobo/電子書)

William McGuffey: Mentor to American Industry(Kobo/電子書)

George Westinghouse:(Kobo/電子書)

The Fall of an American Rome(Kobo/電子書)

Rubber(Kobo/電子書)

William McKinley(Kobo/電子書)

The World s Richest Neighborhood(Kobo/電子書)

The 100 Most Important American Financial Crises(Kobo/電子書)

Benevolent Barons(Kobo/電子書)

The 100 Most Significant Events in American Business(Kobo/電子書)

The Ohio Presidents(Kobo/電子書)