HarperCollins

HarperCollins is among the "Big Five" publishing companies in the United States. They have publishede a number of My Little Pony works over the years.

Friendship is Magic

 * My Little Pony: Tricks and Treats
 * My Little Pony: Welcome to Ponyville
 * My Little Pony: 5-Minute Stories

Pony Life

 * My Little Pony: Pony Life: Meet the Ponies

A New Generation

 * My Little Pony: Sunny's Day
 * My Little Pony: Ponies Unite
 * My Little Pony: Easter Egg Surprise!
 * My Little Pony: Izzy Comes Home
 * My Little Pony: New Series 8x8 1 (Easter)
 * My Little Pony: A New Adventure
 * My Little Pony: Pony Life: Royal Bake-Off

Imprints and staff
Unfortunately, the majority of publications don't have proper credits. The comic book, My Little Pony: Sunny's Day, however, was credited with Megan Roth as the writer and Agnes Garbowska as the artist.