Persons of National Historic Significance in Canada.

The following individuals were honoured for their achievements, and they were all affiliated with Ottawa's Experimental Farm:
William Saunders - was a Canadian agriculturalist, entomologist and a pharmacist.
Sir John Carling - served in the House of Commons and was Canada's Minister of Agriculture from 1885 until 1891. Sir John Carling established the Ontario Agricultural College and the Experimental Farm.
James Fletcher - Entomologist.
David Ewart - Chief Dominion Architect. He received the Imperial Service Order, established by King Edward V11 in 1902. David Ewart designed the Dominion Observatory, Chief Astronomers Residence and Geodetic Survey Building, all located at the Farm.
Sir Sandford Fleming - was a scientist and inventor who pioneered global standard time. A plaque that honours Sir Sandford Fleming is located in front of the Dominion Astrophysical Observatory, Central Experimental Farm in Ottawa.

Sir Sandford Fleming, wearing the tallest hat, watches as the last spike is driven into a CPR railway line. (Photo from Wikipedia.)