please note that the site is undergoing some programming changes this week and as a result, there may be a few temporary bugs.  for example, i’m noticing that the system for viewing multiple images is not working as usual right now, where you normally click on the first small thumbnail chart/image and it opens to full-size for viewing, then you just click anywhere off-center on the right side of the chart to advance to the next chart and so on until it automatically closes after the last chart.  currently, you must open each image one at a time by clicking on them to expand and then use your browser’s back button to close the full size chart and return to the site.  this, along with a few other minor quirks should be corrected soon.