LEGO Production s.r.o. , Kladno IČO 26128209 - Obchodní rejstřík firem | Kurzy.cz
BrickLink - Part 3001pb141 : LEGO Brick 2 x 4 with 'Kladno LEGO Production s.r.o.' and 'Thank you for your help in November 2018' (Translated Czech) Pattern on Opposite Sides [Brick, Promotional] - BrickLink Reference Catalog
BrickLink - Part 3001pb139 : LEGO Brick 2 x 4 with 'Kladno LEGO Production s.r.o.' and 'Thank you for your help in September 2018' (Translated Czech) Pattern on Opposite Sides [Brick, Promotional] - BrickLink Reference Catalog
File:Kladno CZ LEGO factory from NE 007.jpg - Wikimedia Commons