http://blog.archive6zg5vrdwm4ljllgxleekeoj43lqayscd4d4kmhnyblq4h3ead.onion
Most significantly, unlike some Ham Radio organizations, material in DLARC is free for public access (though some material is subject to Controlled Digital Lending). DLARC includes club newsletters (from all over the world), Ham Radio books and magazines (some from very early in the 20th century), audio recordings, video recordings, conference proceedings… literally a treasure trove of knowledge and ideas and inspiration.