Great Detectives: Boston Blackie
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Cache is not at the posted coordinates. Bison tube with rolled up log.
Jack Boyle created Horatio “Boston Blackie” Black in 1919. Originally a jewel thief and safecracker in Boyle’s stories, Blackie eventually became a reformed criminal turned detective in the radio and film versions. There was a TV show in the 1950s whose lead actor sported a “Pencil-Thin Mustache,” referenced in the Jimmy Buffett song of the same name.
The color commonly known as “black” has a value of (0, 0, 0) in the RGB color model. RGB (Red/Green/Blue) values are an additive color model used with computers and other displays involving combinations of colored light. Professional printing is a subtractive model, usually using CMYK (Cyan/Magenta/Yellow/Black), using the combination of colored inks. (Printing this cache page not only is a good test page for your color printer, it's a good comparison test for the differences between the light-created colors on your screen and the ink-mixed colors from your printer.)
Using RGB the largest color intensity is expressed as 255 (this is a remnant of the earliest color displays). So the purest colors have these values: Black (0,0,0); White (255,255,255); Red (255,0,0); Green (0,255,0); Blue (0,0,255); Yellow (255,255,0).
RGB color values can also be expressed in their hexadecimal form for ease of use in programming. In hexadecimal black is expressed as 000000 and red as FF0000, to cite two examples.
It’s possible, therefore, to express certain waypoints using just RGB colors. For example:
The posted coordinates for GC3X88B, Great Detectives: Jessica Fletcher are:
with hex values: 290BCC / 6003C5.
GC3YW1W, Great Detectives: Ellery Queen has its posted coords at
Hex: 290F04 / 5F389E.
And GC42HNH, Great Detectives: Adam Dalgliesh is here:
Hex: 291375 / 600791.
Using the same system as the examples, the cache container for Boston Blackie is here:
Hex: 2909C5 / 600EFF
***New final location very near the original: take your verified final above, add xx.x19 to the north answer and subtract xx.x15 from the west answer.*** Great Detective #28. For more information about puzzle caches by the WBs, use the "Related Web Page" link above.
(No hints available.)
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Coordinates are in the WGS84 datum