blueprint (copy)
On this date, 1899, John Albert Burr invented one of the first rotary-blade lawnmowers.
This Black inventor's Patent number is #624,749.
Created Equal The Lives and Ideas of Black American Innovators
By James Michael Brodie
Copyright 1993, by Bill Adler Books, Inc.
William Morrow and Co. Inc., New York
ISBN 0-688-11536-5
