Train dispatcher with CTC panel in Roslags Näsby, an early example of centralized traffic control in Sweden. From this central, the lines Roslags Näsby-Lindholmen and Roslags Näsby-Åkersberga was controlled.
John Hylterskog
Järnvägsmuseet: <a rel="nofollow" class="external text" href="https://digitaltmuseum.se/021018069699/fjarrblockering-fjb-roslagsbanan">JvmKBDB12814</a>