Karel Janoušek byl jedním z předních umělců lettrismu východních Čech, jehož umění též sbíhalo ke geometrické abstrakci. Dokumenty, jež během života vznikaly jeho činností, daly za vznik osobnímu fondu doplněnému inventářem z veškeré jeho pozůstalosti. Tato bakalářská práce slouží jako životopis a souhrn děl umělce.Karel Janoušek could be counted as one of the foremost artists of lettrism in eastern parts of the Czech republic, whose art style also tended to incline towards geometric abstraction. The documents that were created through his work during his life helped form his personal fond, which is supplemented with an inventory with all of his belongings or rather, his legacy. This bachelor thesis should serve as a biography and a summary of all of the artist's works.