Christopher Schwarz, who wrote "The Anarchist's Tool Chest", recommended elsewhere in the comments, also wrote a book "The Anarchist's Design Book". In it, he covers two basic, simple construction techniques for building what he calls "furniture of necessity".
He doesn't cover specifically a stool of the type you're describing, but he does discuss exactly the problem of joining legs to a seat, and gives several projects using the technique that could be adapted to what you want to build.
If you're looking to build something bar stool height, you'd probably need to add stretchers to make the chair strong enough. If you're going for chair height, you could trivially adapt the staked back stool in chapter 6 to your purposes.
In the interests of full disclosure, I own both "The Anarchist's Tool Chest" and "The Anarchist's Design Book" by Christopher Schwarz, as well as "With the Grain" and "Chairmaker's Notebook", which are also published by his company. My standing gift request is anything from Lost Art Press (said company) that I don't already own. I have no business interest in the company, but I do wish them well, because they publish excellent material.
He doesn't cover specifically a stool of the type you're describing, but he does discuss exactly the problem of joining legs to a seat, and gives several projects using the technique that could be adapted to what you want to build.
If you're looking to build something bar stool height, you'd probably need to add stretchers to make the chair strong enough. If you're going for chair height, you could trivially adapt the staked back stool in chapter 6 to your purposes.
In the interests of full disclosure, I own both "The Anarchist's Tool Chest" and "The Anarchist's Design Book" by Christopher Schwarz, as well as "With the Grain" and "Chairmaker's Notebook", which are also published by his company. My standing gift request is anything from Lost Art Press (said company) that I don't already own. I have no business interest in the company, but I do wish them well, because they publish excellent material.