That's called a "Pedestal Desk". Either 60" wide or 72" wide (the one in the pic looks 60") I have one, brand is "Council Craftsmen", 72" wide. These suckers are solid. Mine weighs 400 pounds empty The gold standard for these desks is probably the manufacturer called Kittinger (Buffalo, NY). A new one is probably $10K-$12K. Quality Furniture industry has crumbled in the past 20 years. Best thing to do is find a high grade antique dealer, close enough they can deliver to you a ~ hundred miles. And bring it into your house // building. Here's a quality store near Allentown, PA. But the search finds no pedestal desks. https://www.stenellaantiques.com/ Keep looking ... One you find a desk, get some bookcases too. Your pic has the bookcase - "Arts and Crafts" style (Stickley) - white oak. I have curly maple bookcases (18th Century reproductions) EBay has a ton of used furniture. But most will probably not deliver to you.
%% Book case can be fun to make; that looks like stained oak. I did not make mine that fancy; but any good kitchen cabinet maker can do that. My dad made a book case with sliding doors ;but i like your open style, easy to read titles. I knew i was going to have to give away some books or make more book case space; did both.
If you live in an area with any decent size population you should check Craigslist. Occasionally there is some high end furniture for sale at good prices.