Map of Buildings Dated by Dendrochronology To fully access this map, expand it by selecting the “View Larger Map” option in the top right corner of the map above.The map will open in a new window.Select MAP LEGEND if the legend on the right-hand side is not displayedPan and zoom the map as you wish.The locations of dendro-dated buildings can be displayed according to date. Check one or more of the boxes for each 50-year period.Close the window when you have finished.