E. F. Johnson Company Employees. Assembly Lines. 9 1/2" x 7 3/4" black and white photograph of the interior of the E. F. Johnson Co. plant; shown are assembly lines, many employees are seated at workstations assembling radios, CB radios, Viking Messenger CBs; photographed by Huneke Studio, Waseca, Minn.; photograph printed in company brochure; quality control area.