While there isn't a single official document or dataset universally known as the "457K zip," several high-quality resources exist depending on whether you are looking for documentation or tax data archives. 457 Retirement Plan Resources
beir-cellar/beir: A Heterogeneous Benchmark for ... - GitHub Download 457K zip
If you are looking for forms or plan information for 457(b) retirement accounts, you can download guides and kits from these official providers: While there isn't a single official document or