DEM - Part one of my reply
you can easily purchase Winged Victor from Cross and Cocked International
Get Winged Victor here
It certainly discusses MacLaren from the point of view of comparing him with "Mac" in Yeates book.
Here is a little about MacLaren's from Hugh Halliday's excellent site dealing with honours to Canadian airmen:
Airforce Association of Canada
MacLAREN, Captain Donald Roderick - Military Cross - awarded as per London Gazette dated 22 June 1918. Born in Ottawa, 8 May 1893; attended McGill University. Home in Vancouver (student surveyor); appointed 2nd Lieutenant with RFC, 19 August 1917. To Expeditionary Force, No.2 Air Stores Depot, 21 November 1917; with No.46 Squadron, 26 November 1917 to 6 November 1918; invalided to England, 6 November 1918; to No.81 Squadron, 30 December 1918. Promoted to Lieutenant, 1 April 1918; to Captain, 6 April 1918. Joined CAF and then went into commercial aviation.; executive assistant to President, TCA. Retired 1958 and became President, Air Cadet League of Canada. Died 4 July 1989. Medals held by Canadian War Museum.
For conspicuous gallantry and devotion to duty. On one occasion, when on low bombing work, he bombed a long-range enemy gun 9,000 yards behind the lines, obtaining from a height of 200 feet two direct hits on the gun truck and two on the railway track alongside. When returning to our lines he encountered a hostile two-seater machine, which he shot down crashing to earth. He then attacked a balloon, which burst into flames, and finally, observing another enemy two-seater plane, he engaged it and eventually succeeded in crashing it to earth. He has set an excellent example of gallantry and skill to his squadron.
NOTE: Public Record Office Air 1/1515 has recommendation forwarded by Headquarters, 3 Brigade, Royal Flying Corps to Headquarters, Royal Flying Corps on 24 March 1918.
By his conspicuous gallantry and devotion to duty this officer has at all times set an excellent example to the younger officers of his squadron.
Notably, on the 21st March 1918, when on low bombing work, this officer, accompanied by seven other pilots, bombed a large enemy gun position which was mounted on a railway track some 9,000 yards behind the lines, east of Brebieres, 2nd Lieutenant MacLaren dived from 1,000 to 200 feet, dropping four 25-pound bombs from the latter altitude. He obtained two direct hits on the gun track, considerably damaging it, and two on the railway track along side the truck. Having exhausted his supply of bombs, he was returning to the lines at 1,000 feet when he encountered an LVG two-seater which he attacked, the enemy aeroplane going into a spin and crashing on the west corner of Douai. He then attacked a balloon at Blache St. Vaast which burst into flames. He then turned south and went over Graincourt where he observed another LVG two-seater which he attacked, the enemy aeroplane turning east, going down under control. 2nd Lieutenant MacLaren pursued him and after diving three or four times finally crashed [the] enemy aeroplane east of Marquion.
To date this officer has accounted for three and one-half enemy aeroplanes, two crashed and one shared with another officer, and one out of control.
MacLAREN, Captain Donald Roderick - Bar to Military Cross - awarded as per London Gazette dated 16 September 1918.
For conspicuous gallantry and devotion to duty as a fighting pilot. He has recently destroyed no less than nine enemy machines, and proved himself a brilliant fighting pilot against enemy aircraft often far superior in number. He has done magnificent service, and set a splendid example to his patrol.
NOTE: The genesis of this award is a submission dated 19 May 1918 from Headquarters, First Brigade to Headquarters, Royal Air Force:
For conspicuous gallantry and devotion to duty. He has proved himself to be a brilliant fighting pilot and when engaged with enemy aircraft, often far superior in numbers, his determination and tenacity has set a fine example to the patrol he has been leading. Since the award of the Military Cross and in a period covering approximately one month, he has destroyed no less than nine enemy machines as under:-
On 15 May 1918 the patrol led by Captain MacLaren met 11 enemy scouts over Armentieres. He dived on a Pfalz Scout and fired 50 rounds at point blank range. He then turned and fired 50 rounds into another enemy machine, almost colliding with it. Both these enemy aircraft went down completely out of control.
On 9 May 1918, when on offensive patrol, several enemy scouts were seen over Laventie. Captain MacLaren dived on one and fired two short bursts at 20 to 30 yards range. Tracers were seen to enter the pilot's cockpit. The enemy machine rolled on its back and fell in a very flat spin completely out of control.
On 8 May 1918, when on offensive patrol, five Albatross Scouts were seen flying north-west over Laventie. He fired a short burst into one at point-blank range. Enemy aeroplane turned on its back and fell completely out of control falling in all directions.
On 6 May 1918, when on offensive patrol, an enemy two-seater was seen flying east from Aire to St.Venant. With another pilot he attacked this machine. After the last attack by Captain MacLaren the enemy aeroplane stalled, fell on its back, emitted volumes of black smoke and crashed west of St.Venant.
To this was appended a list of his victories:
1. 6 March 1918 Hannoveraner Completely out of control
2. 10 March 1918 Albatross Scout Destroyed
3. 21 March 1918 two-seater Destroyed
4. 21 March 1918 two-seater Destroyed
21 March 1918 Kite Balloon In flames
5. 22 March 1918 two-seater Destroyed
6. 22 March 1918 two-seater Smoking and out of control (with another pilot)
7. 23 March 1918 Albatross two-seater Smoking and out of control
8. 23 March 1918 Albatross two-seater Out of control
9. 23 March 1918 Albatross two-seater Destroyed
24 March 1918 Kite Balloon In flames
10. 25 March 1918 LVG two-seater Destroyed
11. 27 March 1918 Junkers two-seater Completely out of control
12. 1 April 1918 Albatross Scout Out of control
13. 2 April 1918 Albatross two-seater Destroyed with four other pilots.
3 April 1918 Kite Balloon Destroyed
14. 21 April 1918 Albatross Scout Smoking and completely out of control.
15. 3 May 1918 LVG two-seater In flames.
16. 3 May 1918 two-seater Crashed
17. 4 May 1918 Albatross Scout Completely out of control.
18, 6 May 1918 DFW Crashed this side of lines (with another pilot).
19. 8 May 1918 Albatross Scout Completely out of control
20. 9 May 1918 Pfalz Scout Completely out of control
21. 15 May 1918 Pfalz Scout Completely out of control
22. 15 May 1918 Pfalz Scout Completely out of control
23. 20 May 1918 DFW two-seater In flames (with another pilot).
20 May 1918 Two Kite Balloons In flames.
20 May 1918 Kite Balloon In flames.
24. 23 May 1918 Pfalz Scout Out of control
25. 26 May 1918 Albatross two-seater Destroyed
26. 28 May 1918 Albatross two-seater Out of control
27. 30 May 1918 Albatross Scout Completely out of control
28. 31 May 1918 Albatross Scout Completely out of control
29. 1 June 1918 Albatross Scout Completely out of control
30. 7 June 1918 Pfalz Scout Crashed
31. 15 June 1918 Albatross two-seater Out of control
MacLAREN, Captain Donald Roderick - Distinguished Flying Cross - awarded as per London Gazette dated 21 September 1918.
Accompanied by two other pilots, this officer attacked four enemy aeroplanes; all of these were destroyed; he himself fought two down to within 200 feet of the ground, destroying both. The two pilots who were with him each accounted for one of the remaining two. It was a well-conceived maneouvre ably carried out, reflecting credit on all concerned. This officer has in four and a hahlf months accounted for 37 hostile aircraft and six balloons, displaying great resolution and exceptional tactical ability.