Counterfactuals teaching data lab
Open, provenance-tracked teaching datasets that readers can filter, plot, inspect, and download while learning where description ends and causal identification begins.
Supporting evidence · data records
Datasets
Research datasets and planned releases.
EffDist V2026
Planned global gridded effective-distance dataset using population grids, settlement layers, and probability-weighted flow graphs in place of geographic great-circle distance. In progress; no completed public release is claimed.
New Markets Tax Credit national financing atlas: 2001–2023 origination years
Reconciled public financing records for 8,439 projects and 21,202 transactions from the August 2026 CDFI release, with 2020 tract internal points, annual financing flows and explicit missing-location flags.
U.S. New Markets Tax Credit project-level panel (FY2001-FY2022)
Cleaned, geocoded, and CDE-linked project-level panel built from 19,907 QLICI transactions covering 8,024 U.S. New Markets Tax Credit projects with origination years 2001–2022. The data spine behind Helfrich (2026).