nical research for the first few years, the first management consultancy was that of Frederick Winslow Taylor, who in 1893 opened an independent consulting practice in Philadelphia. His business card read "Consulting Engineer – Systematizing Shop Management and Manufacturing Costs a Specialty". By inventing Scientific Management, also known as Taylor's method, Frederick Winslow Taylor invented the first method of organizing work, spawning the careers of many more management consultants. For example, one of Taylor's early collaborators, Morris Llewellyn Cooke, opened his own management consultancy in 1905. Taylor's method was used worldwide until industry switched to a method invented by W. Edwards Deming.[citation needed] The initial period of growth in the consulting industry was triggered by the Glass–Steagall Banking Act in the 1930s, and was driven by demand for advice on finance, strategy and organization. From the 1950s onwards, consultancies expanded their activities considerably in the United States, and also opened offices in Europe and later in Asia and South America. The management consulting firms Stern Stewart, Marakon Associates, and Alcar pioneered value-based management (VBM), or "managing for value", in the 1980s based on the academic work of Joel Stern, Bill Alberts, and Professor Alfred Rappaport. Other consulting firms including McKinsey and BCG developed VBM approaches. Value-based management became prominent dur