NYC WTC Air Quality Documents

Start Here: Shuffled Page Gallery

Click on any image to jump to that page in the PDF file provided by NYC.gov (note that this is all 173,276 individual pages in jpeg format). The original data are paper documents that were printed and stored in doc boxes.

All of the data on this site was sourced from information provided at nyc.gov/sep11docs. The website provided has the documents available to view as scanned paper pages in PDF files.

note: OCR data and Box/Dept origin not sourced.

email me (wjl88 [at] cornell.edu) with any questions or data/web requests

Air Quality Documents Dataset

All Document Pages Gallery (infinite scroll image gallery)

Randomly Shuffled Gallery View (great for discovery)



All Documents (list of PDF download links)

coming soon: All Documents (single .tar.gz archive)

DONE: All Pages (jpg image files of all individual pages

coming soon: Vision Language Model Analysis (TXT files)

Selected stats about the document dataset.

Document

Page Count Stats

Filenaming Convention for PDF documents

Notes on Valid PDF Files

Scanned document files have a fixed format, 9-digit numbering system. Most of the numbers are not valid filenames for HTTP requests.

Valid Filename Numbers

Full Plaintext File of all integer numbers that were valid filenames.

Valid Filenames

Full Plaintext File of all valid filenames not including the extension .pdf

Page Count Distribution

Full Plaintext File of all valid filenames and page counts, sorted.

References and Links

[NYC.gov] 9/11 Documents Portal

[Gothamist] NYC’s 9/11 document release could expand number of people receiving federal benefits

[WSJ] Zohran Mamdani’s 9/11 Conspiracy