Oxford English Dictionary.pdf -

While many people search for a "pdf" version, the OED has evolved far beyond static files:

The first electronic version launched in 1988, followed by OED Online in 2000. oxford english dictionary.pdf

Currently under revision, the forthcoming third edition is expected to be exclusively electronic, as its scale likely precludes any future printings. Why a "PDF" Search Often Leads to Alternatives While many people search for a "pdf" version,

The first edition took 70 years to complete, while the 1989 second edition filled 20 massive volumes. oxford english dictionary.pdf