Well, without having read 'my wonder horse short story', it's hard to give a definite account. However, it could potentially be a story set in a rural area where a horse is a beloved companion. The horse might perform heroic deeds, like saving someone from danger, or it could be a story about the bond between the horse and its owner that overcomes difficulties and hardships.
There could be the wonder horse as the central character. Then perhaps a young person, like a boy or a girl who befriends the horse. There might also be some antagonists, like people who don't understand the horse's value and try to harm it or take it away. There could also be other animals in the story that interact with the horse, either as friends or foes.
I'm not sure specifically as I haven't read it in detail. But generally, it might be about a horse with some extraordinary abilities or qualities that make it 'wonderful', like it could be extremely fast, intelligent or have a special bond with its owner.
It's hard to say for sure. You might need to do some research or find someone who's familiar with that particular comic from 1952 to get a definite answer.
In short stories, the American horse is often a symbol of power. It can carry the rider swiftly through difficult terrains, which represents the ability to overcome obstacles.
The story of My Horse in My Altay described the situation of a person in debt. In order to repay the debt, his family used a horse as a repayment item. However, the protagonist's mother hesitated, not knowing what to do with the horse. In the end, she decided to give the horse to the protagonist. This story showed people's longing and hesitation about owning a horse.