Peer Music's page on Weinberg
PeerMusic, one of the main publishers of Weinberg's music. Their pages on Weinberg include a biography, select discography, a worklist and notes on a selection of Weinberg's works. There are also links to buy sheet music. (The equivalent pages on their German website offer a more extensive selection of sheet music to purchase - see link here ).
Sikorski's page on Weinberg
Similarly, Sikorski publishing's page on Weinberg is also informative, with a wide selection of sheet music to hire/purchase, and a particularly good feature detailing upcoming performances.
The International Mieczysław Weinberg Society
A recently established group seeking to promote Weinberg's life and works with concerts, recordings, and publications. Run by international violinist Linus Roth, with Irina Shostakovich as honorary president.
Peermusic's page on ISSUU
ISSUU is a platform for publishers to share documents, allowing free reading access (but no download function). Peermusic have uploaded a wide selection of Weinberg scores, all free to read, including symphonies and chamber music.
Weinberg.net - an excellent resource
From what I gather, a site run by an enthusiastic admirer of Weinberg's music, providing an excellent collection of information, articles, weblinks, reviews and news.
Weinberg Discography - maintained by Claude Torres
An indispensable resource for Weinberg enthusiasts online. Mr. Torres's discography is fastidiously detailed, and updated extremely frequently, with details for each of Weinberg's works, organised by opus number. Also features a thorough catalogue of Weinberg's music, including works for film.
Put together by the late Ian MacDonald, with the late Per Skans, this timeline provides a wealth of information. Mostly accurate, a few opus numbers missing, and a small handful of errors, but useful nonetheless.
Weinberg spotify collection
For users of the music streaming software Spotify, a user called Ulysses has compiled a chronological collection of all the Weinberg recordings available on their service. Extremely useful for those readers eager to hear more of Weinberg's music.
Article on Culture.pl
An excellent introductory article on Culture.pl, the online magazine promoting Polish Culture abroad, run by the Adam Mickiewicz Institute and funded by the Ministry of Culture and National Heritage of Poland.
Ludmila Nikitina interview with Weinberg (1994)
A digitised version of one of the most useful sources of biographical information on Weinberg: a 1994 interview with the composer (in Russian). First published as 'Pochti lyuboy mig zhizni - rabota' [Every moment of my life - is work], Muzïkal'naya akademiya, 1994/5, 17-24.