I'm wondering if there are any books or broad survey articles that survey current mathematical areas, i.e. mathematics of the last 50 years.
Ideally, these would continue in the style of the various classics that survey mathematics, but do so from "the ground up" and so only reach the advanced undergraduate curriculum (topology, PDEs, algebraic geometry, number theory, calculus of variations, optimisation, analysis, abstract algebra, galois theory, functional analysis, etc.)
These existing survey books I've seen typically bring one up to the edge of 19th century and early 20th century mathematics. For example, the surveys by Kolmogorov, et.al. (Mathematics: Contents, Methods & Meaning), the VNR Encyclopaedia of Mathematics (Gellert, et.al), or Klein's (Advanced Mathematics from an Elementary Point of View).
I'm now looking for something that ideally would pick up the thread beyond these, starting in the 1930s and 40s, to the present.
It is fine if the audience is expected to have an undergraduate degree in mathematics or even a graduate degree.
The intended audience would perhaps not be a complete beginner or high school student, but perhaps a mathematician specialising in one particular area but interested in the breadth of the field, or a statistician / computer scientist / engineer / physicist, with the intent to familiarise the reader with the breadth and directions of current active areas of investigation / research.
Any particularly well-written books / articles you have come across?