Discharge trace (464/1776):
463: Discharge trace 5
462: Discharge trace 4
461: Discharge trace 3
460: Discharge trace 2E
459: Discharge trace 2B
458: Discharge trace 2
457: Discharge of 1 through 4
456: Discharge at #5 and 6
455: Demolition south side of #4
454: Dec 23 jet stream
465: Dropped beach
466: CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 80
467: Dude and cap
468: Dude
469: E-mail
470: CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 80
471: CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 80
472: Early EPA graph
473: Enson
474: EPA Rapid City March 1 to 18
