This is apparently a first draft of the letter that Fred wrote general Canadian mission board informing them of his engagement to Sibyl. The tone is different from the one that he wrote to Effie Jamieson of the Woman's Board of the Canadian Mission.
1. This appears to be a first draft, from before Fred had the correct address for Dr. Arnup.
2. We have three letters that Fred wrote to tell various mission people of his engagement, plus a letter that Sibyl wrote, for a total of four. Here are the four letters: