Signaling Flashlight, by Julion Okram

"The Adventure with the Lost Train" by Julion Okram, the front cover book illustration (Slovak title translation: "Dobrodružstvo so strateným vlakom"). A pencil drawing of an old metallic military or railway flashlight equipped with movable colored light filters in order to produce color-coded signals and blinking messages (such as STOP, SOS, GO, etc.). Heroes: Sinister Barton; Grandma Estela (babička); Bruno Bolek. Mystery thrillers with humor & romantism. family reading; sci-fi; fantasy; adventure; romantic; www.okram.fr (Licence / Permission: Free online display by third parties and image search indexing are allowed for an unaltered whole picture or reduced thumbnails - placed in a proper context, retaining all labels and watermarks, always with backlink to the original genuine source and acknowledgement of authorship attributions.)