Psychological Test, Retail Selling Inventory


The Retail Selling Inventory was coauthored by Harry J. Baker (1889-1981) and Paul H. Voelker (1907-2005) of the Detroit Public Schools. It appeared in 1939. According to a contemporary review, it was designed to select students who would do well in commercial courses and to assist in choosing employees who had not studied business. Baker, director of the psychological clinic of the Detroit Public Schools, had his bachelor’s degree, master’s, and PhD. from the University of Michigan. Voelker would serve as the divisional director of the Department of Special Education of the Detroit Public Schools from 1945 until at least 1965.

Compare 1990.0034.056.


Harry J. Baker, “An Experiment in the Education of Gifted Children,” Exceptional Children, 9 #4, 1943, pp. 112-120. This article indicates that Baker job and lists his degrees

Detroit Public Schools, Special Education for Handicapped Children, Detroit: Board of Education of the City of Detroit, 1965 indicates that Paul H. Voelker was Divisional Director, Department of Special Education, Detroit Public Schools from 1945-1965.

“On the Book Shelf,” The Journal of Business Education, 1942, 17 #8, p.41. This article includes a review of Retail Selling Inventory.

Date Made: 1939

Maker: Baker, Harry J.Public School Publishing CompanyVoelker, Paul H.

Location: Currently not on view

Subject: MathematicsPsychological Tests


See more items in: Medicine and Science: Mathematics, Science & Mathematics


Exhibition Location:

Credit Line: Gift of David Gold

Data Source: National Museum of American History

Id Number: 1989.0710.25Accession Number: 1989.0710Catalog Number: 1989.0710.25

Object Name: Psychological Test

Physical Description: paper (overall material)Measurements: overall: 21.5 cm x 28 cm; 8 15/32 in x 11 1/32 in


Record Id: nmah_692518

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