Question: When was the group of paintings by Bruno Armadio distributed?

Context paragraphs:
Mammon (painting): Mammon, originally exhibited as Mammon Dedicated to his Worshippers, is an 1885 oil painting by English artist George Frederic Watts, currently in Tate Britain.  One of a number of paintings by Watts in this period on the theme of the corrupting influence of wealth, "Mammon" shows a scene from Edmund Spenser's "The Faerie Queene" in which Mammon, the embodiment of greed, crushes the weak through his indifference to their plight.  This reflected Watts's belief that wealth was taking the place of religion in modern society, and that this worship of riches was leading to social deterioration.  The painting was one of a group of works Watts donated to the South Kensington Museum (now the Victoria and Albert Museum) in late 1886, and in 1897 it was one of 17 Watts paintings transferred to the newly created Tate Gallery.  Although rarely exhibited outside the Tate Gallery, the popularity of reproductions made "Mammon" one of Watts's better known paintings.

Herbert Dicksee: Herbert Thomas Dicksee (14 June 1862 – 20 February 1942) was an English painter who specialised in oil paintings of dogs, particularly the deerhound.  Prints and etchings of his best-known paintings were widely distributed by publishers such as Klackner of London, and his work is popular among collectors and dog enthusiasts today.

Biological museum (Stockholm): Biologiska museet is a museum located in Djurgården in Stockholm.  It exhibits a collection of stuffed European birds and mammals in dioramas.  Some of the diorama backgrounds were created by artist Bruno Liljefors, known for his dramatic paintings of Scandinavian wildlife.  The museum was built in 1893

Hiran Mitra: Hiran Mitra (born 1945) is an artist based in Kolkata (West Bengal, India).  He left his ancestral country home in Kharagpur to study Fine Art in the Government College of Art & Craft, Kolkata at the age of 14.  His paintings are energetic abstract gestural paintings with the choreography of the human body observed from folk dance having influenced his recent calligraphic forms.  He has contributed significantly to the visual stimulus in eastern Indian films, television, theatre and literature since in the 1980s.  He is also known to have defined a benchmark for book cover design for contemporary Bengali literature.  His paintings are statements on the human condition and the twilight zones of reality and time.  Bold brush strokes, layered washes and sprays and unconventional use of acrylic and industrial paints characterize his paintings.  He is part of the Open Window Artist group and has been part of the Painters 80 Artist group in Kolkata.

Black Paintings: The Black Paintings (Spanish: Pinturas negras) is the name given to a group of fourteen paintings by Francisco Goya from the later years of his life, likely between 1819 and 1823.  They portray intense, haunting themes, reflective of both his fear of insanity and his bleak outlook on humanity.  In 1819, at the age of 72, Goya moved into a two-story house outside Madrid that was called "Quinta del Sordo" ("Deaf Man's Villa").  Although the house had been named after the previous owner, who was deaf, Goya too was nearly deaf at the time as a result of an illness he had suffered when he was 46.  The paintings originally were painted as murals on the walls of the house, later being "hacked off the walls and attached to canvas."  Currently they are held in the Museo del Prado in Madrid.

Phintias (painter): Phintias was an ancient Greek vase painter; along with Euphronios and Euthymides, he was one of the most important representatives of the Pioneer Group of Athenian red-figure vase painters.  Ten works from the period between 525 BC and 510 BC bearing his signature survive: seven vase paintings and three pottery works.  Since his career began before the time of the Pioneer Group, his paintings look somewhat more old-fashioned than those of the other Pioneers; and the influence of earlier red-figure painters such as Psiax or Oltos is strong.  Even during the Pioneer Group period he continued to use certain techniques of the black-figure style, e.g. outlines reinforced by scratching and black-figure ornamental borders.  His paintings have been called clear, concise, and exact, but also static and somewhat stiff.  Phintias' repertoire, however, is rich.  He drew everyday scenes such as "hetaerae", symposia and music lessons, but also mythological scenes.  Like the other major members of the Pioneer group, he frequently wrote on his vases, and depicted some of his "colleagues".

Jake Berthot: Jake Berthot (1939–2014) was an American artist whose abstract paintings contained elements of both the minimalist and expressionist styles.  During the first 36 years of his career his paintings were entirely non-figurative.  His style changed in 1995 when he moved his studio from New York City to a rural community in upstate New York.  While continuing to be abstract his paintings thereafter contained figurative elements and were seen to have greater emotional content.  Throughout his career his work frequently appeared in solo and group exhibitions in both commercial and public galleries.  It has been collected by the Museum of Modern Art, Metropolitan Museum of Art, Guggenheim Museum, National Gallery of Art, and other major American art museums.  He received a Guggenheim Fellowship in 1981 and a National Endowment for the Arts grant in 1983.

Giovanni Bragolin: Bruno Amadio (15 January 1911 – 22 September 1981), popularly known as Bragolin, and also known as "Franchot Seville", "Angelo Bragolin", and "Giovanni Bragolin", was the creator of the group of paintings known as "Crying Boys".  The paintings feature a variety of tearful children looking morosely straight ahead.  They are sometimes called "Gypsy boys" although there is nothing specifically linking them to the Romani people.

The Crying Boy: The Crying Boy is a mass-produced print of a painting by Italian painter Giovanni Bragolin.  It was widely distributed from the 1950s onwards.

Sumo Bruno: Sumo Bruno (originally titled "Sumo Bruno – Dein schwerster Gegner bist du selbst") is a 2000 German comedy drama film directed by Lenard Fritz Krawinkel and starring Hakan Orbeyi, Oliver Korittke, Julia Richter, Martin Seifert, Thomas Drechsel, Tim Wilde and Martin Semmelrogge.  The film was produced and distributed by Babelsberg Studio, one of Germany biggest production studios.

Supporting paragraphs: Giovanni Bragolin The Crying Boy
Answer: 1950s onwards