topic

• African American inventors4
• African American authors1
• Freed persons1
• Lubrication systems1
• Tabulating machines1

name

• Baker, Henry E. (Henry Edwin), 1859-19284
• McCoy, Elijah, 1844-19291
• United States. Patent Office1

collection

• The colored inventor : a record of fifty years4

genre

• Photographs3
• Portraits3
• Title pages1

publisher

division

• Schomburg Jean Blackwell Hutson Research and Reference Division4

type

• still image3
• text1