Roller Machine Cancels. 1912 group of four covers with the bilingual "OLYMPISKA SPELEN I STOCKHOLM / OLYMPIC GAMES OF STOCKHOLM / 29 JUNI - 1912 - 22 JULI" roller machine cancels, one dated May 15th also with the "JEUX OLYMPIQUES / + STOCKHOLM 1912 + / LE 29 JUIN - 22 JUILLET" publicity hs, others dated 9th May, 20th June and 19th July (during the Games), plus official picture postcard of J. H. Duncan with the "STADION" reproduction cds and a mint block of four of the English poster stamps, variously affected by being stored in a humid climate. (Image)