The product is a rulebook from 1936 of the New York Central Railroad, Pittsburgh Lake Erie Railroad, Indiana Harbor Belt Railroad, Chicago River Indiana Railroad outlining the procedures for testing visual acuity, color perception, and hearing abilities of employees in a transportation setting. This rulebook likely had specific guidelines and standards for these assessments to ensure safety and efficiency for those working in the industry, such as railroad or transportation workers. It provides valuable insight into the requirements and expectations for employee health and performance in a collectible piece from 1936.