I chose two of my absolute favourites. The first one is my favourite of the Trixie Belden Mysteries. The Mystery of the Emeralds. The best teenage detective EVER, Trixie and her friends and family kept me company all through my childhood. I wanted to be her so badly. :) I could relate much better to the 13/14-year old Trixie than I could to 18 year old Nancy Drew who always seemed so superior and never did anything wrong. Trixie did a lot wrong. :) She lost her temper, made bad choices, and she wasn't the greatest student ever. She hated her chores. But she loved her family and friends, she wanted to help everyone, she had street smarts and intuition. And she always tried to do her best.
The second book is The White Riders by Monica Edwards. It was the first Edwards book I read back as a kid and I fell in love instantly with Tamzin, Rissa, Roger and Meryon. Then I found out it was one of a series, The Romney Marsh series. And it was connected to the Punchbowl Farm series where the foursome was friends with the Thornton family. These kids had adventures, solved mysteries, solved problems, had horses and all kinds of animals. This was how I imagined life for kids over in England. :) I read both of these series' and the Trixie books over and over again. Even to this day I will read them.