Elsie Dinsmore Collection: Elsie's Winter Trip, Book 26 by Martha Finlay and published by Hendrickson.
Following their honeymoons, Lucilla and Evelyn set up housekeeping with their husbands, Chester and Max in a new shared home, Sunnyside. The family enjoys a round of parties held in honor of the newlyweds. When Max returns to the navy, the rest of the family travels with Grandma Elsie during the cold months on board the Dolphin to several Caribbean islands and the shores of South America. Elsie and Ned Raymond acquire pet monkeys, and Ned takes an unfortunate tumble overboard but is saved by a quick-thinking sailor. Recommended for ages 10-14.