For readers outside the US, copyright terms vary (e.g., life+50 or life+70 years). Gardner died in 1970, so his works are public domain in life+50 countries (e.g., Canada, New Zealand, most of Africa and Asia) but not in life+70 countries (most of Europe, Australia, Brazil, etc.). Always check your local laws.

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To access free PDF downloads of Perry Mason books, you can try the following:

The majority of Erle Stanley Gardner’s Perry Mason novels are not in the public domain in most jurisdictions. While Gardner passed away in 1970, copyright terms in the US generally last for 70 years after the author's death, or 95 years after publication for works made for hire. Consequently, downloading PDFs of these books from unauthorized "shadow library" sites (such as Z-Library, Sci-Hub, or torrent sites) constitutes copyright infringement in most countries.

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