| Maciunas Ensemble | Mario Van Horrik Postcard | 1992 | Netherlands | Postcards |
| Madame Sadie (MME Sadie) | Madame Sadie in Interchange | | United Kingdom | Mag/Lit |
| Madame Sadie (MME Sadie) | poster with Ramleh | | United Kingdom | Mag/Lit |
| Magisch Theater | Chain letter | | | Mag/Lit |
| Mailart | some Mailart examples | | | Mag/Lit |
| Malcolm Neon | Malcolm Neon Interview 1986 (Source unknown) | 1986 | United Kingdom | Mag/Lit |
| Malcolm Parr | Found Poems (Second Aeon) 1972 | 1972 | United Kingdom | Mag/Lit |
| Maniacs | German Tanks Promo | | Germany | Mag/Lit |
| Mannamaschine | Info-Sheet | | Germany | Mag/Lit |
| Manon | Ball der EInsamkeiten Poster and Info for Apropos Exhibition | | Switzerland | Mag/Lit |
| Manowar | Manowar Promo-Map 82/83 | 1983 | United States | Mag/Lit |
| Mara Zibens and Richard Truhlar | Interior Design (Tekst Editions) | 1982 | Canada | Mag/Lit |
| Marc Texier | Manifeste de Musique Architecturale (Edition du GMA) 1977 | 1977 | France | Mag/Lit |
| Marcel Duchamp | Etant Donnes (Museum of Art Philadelphia) 1987 | 1987 | United States | Mag/Lit |
| Marcel Just | Marcel Just at APROPOS | | Switzerland | Mag/Lit |
| Marcel Just | Photos | | | Mag/Lit |
| Marcello Diotallevi | letters to senders il brandale | | Italy | Mag/Lit |
| Marcelo Exposito | Marcelo Exposito Mailart | | Spain | Mag/Lit |
| Marco Furia | Effemeride | | Italy | Mag/Lit |
| Margaret Freeman | Live Le 27 Mai 1989, Arcueil Photo | 1989 | France | Mag/Lit |
| Margaret Freeman | Margaret Freeman Concert Flyer 1989 | 1989 | France | Mag/Lit |
| Maria Zerfall | Photos | | Germany | Mag/Lit |
| Marianne Eigenheer | Bilder zur Lage | | Switzerland | Mag/Lit |
| Marianne Eigenheer | T-Shirt for APROPOS Exhibition | | Switzerland | Mag/Lit |
| Mario Marzidovsek | Artist and Label Promo | | United States | Mag/Lit |
| Mario Marzidovsek | Book Kniijga | | Slovenia | Mag/Lit |
| Mario Marzidovsek | Letter spontaneous Art 1 85 | 1985 | Slovenia | Mag/Lit |
| Mario Marzidovsek | magazine | | Slovenia | Mag/Lit |
| Mario Marzidovsek | Marzidovshek Minimal Laboratorium | 0 | | Mag/Lit |
| Marjo Schumans | Outlines | | | Mag/Lit |
| Mark Lane | early Info / Bio | | | Mag/Lit |
| Mark Pawson | Info letter | | | Mag/Lit |
| Mark Shreeve | Information to Mark Shreeve | 0 | United States | Mag/Lit |
| Mark Shreeve | Promo for collaboration with Steve Roach | | United Kingdom | Mag/Lit |
| Mark W. Sutherland | A Few Words about John Cage (Visual Studios Workshop Press) 1999 | 1999 | Australia | Mag/Lit |
| Mark W. Sutherland | Cornneal Abrasion (The Portable Gallery) 1998 | 1998 | Australia | Mag/Lit |
| Mark W. Sutherland | Have you Been Duchamp'd (The Portable Gallery) | 1989 | | Mag/Lit |
| Mark W. Sutherland | Noah (The Portable Gallery) 1996 | 1996 | Australia | Mag/Lit |
| Mark W. Sutherland | Pursuing the Millenium | | Australia | Mag/Lit |
| Mark W. Sutherland | the general Knowledge of Idiots (The Portble Gallery) 1989 | 1989 | Australia | Mag/Lit |
| Mark W. Sutherland | The Science of Freud (the Portable Gallery) 1988 | 1988 | Australia | Mag/Lit |
| Mark W. Sutherland | The Van Gogh Letters (the Portable Gallery) 1988 | 1988 | Australia | Mag/Lit |
| Mark W. Sutherland | They Call it Stormy Monday (the Portable Gallery) | | Australia | Mag/Lit |
| Martin Kornberger & Volker Kuhn | Embrace Promo | | Germany | Mag/Lit |
| Martin Schwarz | Arbeiten 1969-1972 | 1972 | Germany | Mag/Lit |
| Mary Harding | The Passion Text envelope with poster | | | Mag/Lit |
| Mary Yates | postcard | | | Mag/Lit |
| Massacre | Promo Info to Tape | | | Mag/Lit |
| Master Bedroom Music | Master Bedroom Music Promo | | | Mag/Lit |
| Maurice Lemaitre | Bilan Lettriste (Editeurs Richard Masse) 1955 | 1955 | France | Mag/Lit |
| Maurice Lemaitre | Carnets d un Fanatique (Centre du Creativite) 1959 | 1959 | France | Mag/Lit |
| Maurice Lemaitre | Carnets d un Fanatique II (Centre du Creativite) 1960 | 1960 | France | Mag/Lit |
| Maurice Lemaitre | La Lettrisme devant dada (Centre de Creative) | 1967 | France | Mag/Lit |
| Maurice Lemaitre | Le film est deja commence | | France | Mag/Lit |
| Maurice Lemaitre | Le Theatre dadaiste et surrealiste (Centre du Creaitivite) | 1964 | France | Mag/Lit |
| Maurice Lemaitre | Le Theatre futuriste italien et russe (Centre du Creaitivite) | 1967 | France | Mag/Lit |
| Maurice Lemaitre | Oeuvres Poetiques et Musicales le Lettrisme Centre du Creativite) re-edition | 1972 | France | Mag/Lit |
| Maurice Lemaitre | Poemes et Musique Lettriste Lettrisme 24 | 1971 | France | Mag/Lit |
| Maurice Lemaitre | Qu est'ce que le Lettrisme (Edition Fischbacher) 1964 | 1964 | France | Mag/Lit |
| Maurice Lemaitre | Qu'est ce que le Lettrisme (Centre du Creaitivite) | 1966 | France | Mag/Lit |
| Maurice Lemaitre | Quelque differences etre le futurisme et le lettriste (Centre du Creativite) | 1976 | France | Mag/Lit |
| Mauricio Kagel | Das Filmische Werk | | Germany | Mag/Lit |
| Mauricio Kagel | Musik - Theater - Film (Dieter Schnebel, DuMont) | 1970 | Germany | Mag/Lit |
| Maurizio Bianchi (M.B.) | Humans Subumans Collage | 0 | | picture |
| Maurizio Bianchi (M.B.) | letter and Collage to Adi Newton | | Italy | Mag/Lit |
| Maurizio Bianchi (M.B.) | MB neuro habitat in force mental 2 | 0 | Netherlands | Mag/Lit |
| Maurizio Bianchi (M.B.) | MB promo-letters | | Italy | Mag/Lit |
| Maurizio Nannucci | early Infosheet | | Italy | Mag/Lit |
| Maurizio Nannucci | Exhibition Catalogue Neue Gallerie am Landesmuseum Joaneum Graz | | Austria | Mag/Lit |
| Maurizio Nannucci | Provisoire & Definitif | | Italy | Mag/Lit |
| Maurizio Nannucci | Rose aux… | 1975 | Italy | Mag/Lit |
| Maurizio Nannucci | Star Scrivendo (HOWEG) | | Italy | Mag/Lit |
| Mauthausen Orchestra (Pierpaolo Zoppo) | Mauthausen Orchestra They Never Learn Booklet. | | | Mag/Lit |
| Mauthausen Orchestra (Pierpaolo Zoppo) | several Promo-Sheets | | United Kingdom | Mag/Lit |
| Max Eastley | Sonurgy | | United Kingdom | Mag/Lit |
| Mekanik Destrüktiw Komandöh (M.D.K.) | Der Tag Schlägt zurück (Booklet) | | Germany | Mag/Lit |
| Mekanik Destrüktiw Komandöh (M.D.K.) | Die Verweigerer | | | Mag/Lit |
| Mekanik Destrüktiw Komandöh (M.D.K.) | MDK | 0 | | Mag/Lit |
| Merzbow | early 80's Mail-Art my Masami Akita | 1982 | Japan | Mag/Lit |
| Merzbow | Life Performance Poster | | United Kingdom | Mag/Lit |
| Merzbow | Lowest Music and Arts Mail-Art / Collage | | Japan | Mag/Lit |
| Merzbow | Mailart object and letter to 3Rio | | Japan | Mag/Lit |
| Merzbow | Merzbow & Itinerant Priests (Material Action) Booklet | | Japan | Mag/Lit |
| Merzbow | Promo photos, Xerox Art, Collages | | United Kingdom | Mag/Lit |
| Merzbow | Solonoise 2 Promoletter Merzbow to Tommy Rinnstein (Modern Products) | | United Kingdom | Mag/Lit |
| Merzbow | Solonoise Poster (A3) xeroxed | 1982 | United Kingdom | Poster |
| Metalic Fuck | Annoy Tape Promo | | | Mag/Lit |
| Metamorphosis | Metamorphosis in INTERCHANGE2 | 0 | United Kingdom | Mag/Lit |
| Michael Brinntrup | Undsoweiter und sofort | | Germany | Mag/Lit |
| Michael Gibbs | Cakra Mantra (Kontexts) | | Netherlands | Mag/Lit |
| Michael Gibbs | Connotations (Second Aeon) | | United Kingdom | Mag/Lit |
| Michael Gibbs | Deciphering America (Kontext Publications Amsterdam 1978) | 1978 | Netherlands | Mag/Lit |
| Michael Gibbs | Night Song (Kontexts) | | Netherlands | Mag/Lit |
| Michael Gibbs | Permutation Poem (Kontexts) | | Netherlands | Mag/Lit |
| Michael Haslam | Son Son of Mother (Lobby Press) 1978 | 1978 | United Kingdom | Mag/Lit |
| Michael Helsem | Mysteries from forgotten worlds | | | Mag/Lit |
| Michael McClure | Ghost Tantras (Four Seasons) | 1969 | United Kingdom | Mag/Lit |
| Michael McClure | Meat Science Essays | | United States | Mag/Lit |
| Michael McClure | vom Proteingral das Rare Angel Exzerpt (Verlag Altaquito) 1986 | 1986 | Germany | Mag/Lit |
| Michel Seuphor | Exhibion Musee des Beaux-Art La Chaux-de-Fonds | 1968 | Switzerland | Mag/Lit |