PD sources

Now and then I try to remove links that are dead, outdated, or have changed in some way

Everything or just more

Wikimedia Commons
ThoughtCo Lifelong Learning
Open Culture Films, Audio, Books, Classes
Creative Commons
Welcome · Digital Public Library of America

Vintage Ad Browser - vintageadbrowser.com
Vintage ad browser seems to be down but the link leads to a statement. I’m leaving the link.
                       : Magazine Art Links to other sources
Art Passions - Illustrations by Historical Artists

PD comics

Public Domain Super Heroes
Public Domain Characters (Concept)
Comic Book Plus - Free And Legal Public Domain Books
Golden Age Heroes

Nobody Loves A Fat Man - Non PC but funny comic from circa 1909

Books - some audio

900 Free Audio Books: Download Great Books for Free
Free public domain audiobooks
LibriVox free audio books
Project Gutenberg - free ebooks
Tens of Thousands of Free Kindle eBooks Online    -   techsupportalert.com
Many Books - some free
Free Classic Books Online at Classic Reader
Questia - The Online Library of Books and Journals
471 Places for Free eBooks Online

Clip Art & Images

Free Clipart Graphics, Images and Photos. Public Domain.
Public Domain Clip Art
Openclipart - Free Clipart Are The Best
Public Domain Photos
Pixabay - Free Images
PD Photo - Free Photos And Pictures (public domain, stock pictures, wallpaper, royalty free, clip art, etc)
Photos Public Domain - Free photographs, pictures, clipart & images for any use - Royalty Free Stock Photos
Web Gallery of Art, image collection, virtual museum, searchable database of European fine arts (1100-1850)
Creative Nerds Freebies
Duke University Digital Repository -Ads A collection of Advertisements

Music and/or sounds

Public Domain Music
Public Domain 4U – Best in Public Domain MP3s
Browse Music by composer, performer, instrument, period or form
public domain music, public domain songs, public domain classical music
Stonewashed Free Music
List of Public Domain Songs
Mechanical Sound Effects
Musopen - Music and sheet music
Free Sound Effects, Royalty Free Sound Effects, Nature Sounds
PD Info-Public Domain and Royalty Free Music
kunstderfuge.com | Free Classical MIDI files. Classical Music    The largest classical music resource in .mid files


Free Movies Cinema - Action, Documentary, Cartoon, Animation, thriller, Horror, Comedy, Sci-Fi, STREAMING
Watch Documentaries and Animated Films Online - NFB.ca
PublicDomainFlicks.com - Free Public Domain Movie Downloads
List of films in the public domain in the United States - Wikipedia, the free encyclopedia
Public domain collection of film noir at Archive.org - Boing Boing
Latest films and commentary on ASO - Australia's audio and visual heritage online
Classic Cinema Online - Home
Films - CC Wiki
Internet Archive: Digital Library of Free Books, Movies, Music & Wayback Machine
Crackle - Watch Movies Online, Free TV Shows, & Original Online Series
Watch Documentaries and Animated Films Online - NFB.ca
B-Movies - AMC

Better Specific Searching

Searches that specialize in books, science, other information.

www.refseek.com - Academic Resource Search. More than a billion sources: encyclopedia, monographies, magazines.

www.worldcat.org - a search for the contents of 20 thousand worldwide libraries. Find out where lies the nearest rare book you need.

https://link.springer.com - access to more than 10 million scientific documents: books, articles, research protocols.

www.bioline.org.br is a library of scientific bioscience journals published in developing countries.

http://repec.org - volunteers from 102 countries have collected almost 4 million publications on economics and related science.

www.science.gov is an American state search engine on 2200+ scientific sites. More than 200 million articles are indexed.

www.pdfdrive.com is the largest website for free download of books in PDF format. Claiming over 225 million names.

www.base-search.net is one of the most powerful researches on academic studies texts. More than 100 million scientific documents, 70% of them are free

National Digital Library : Home

Miscellaneous for now

Free Audio Books: Download Great Books for Free | Open Culture
Free Computer & Internet Books Online
What is Copyright Protection?
US NSF - Multimedia Gallery
Cure writer's block with writing prompts - writing tips character name generator
Melt - Visualmelt.com an archive of esoteric and contemporary culture. Visual & audio