Was the Zodiac inspired by this?

Zodiackiller.com Message Board: General Zodiac Discussion: Was the Zodiac inspired by this?

By Mike_Cole (Mike_Cole) (12-224-40-230.client.attbi.com - on Wednesday, August 20, 2003 - 12:13 am:

The National Oceanic and Atmospheric Administration creates costal maps. There are several historic maps available (Although you'll need an application called MrSID to view them. It's free. See the link on the page).

The image below is a directional key from a 1969 map of the SF Bay area.

360 degree directional key showing true north and magnetic north

By Wendi (Wendi) (dpc6682009023.direcpc.com - on Wednesday, August 20, 2003 - 12:26 am:

Thanks Mike! Thats so cool! Great link...

By Tom Voigt (Tom_Voigt) (12-231-193-32.client.attbi.com - on Wednesday, August 20, 2003 - 12:35 am:

Mike, congrats on a great job of finding this. You're a relative newcomer to the Zodiac case, but have already been an excellent addition to the message board!

By Bookworm (Bookworm) (12-206-165-69.client.attbi.com - on Wednesday, August 20, 2003 - 07:15 am:

Thanks Mike,

Notice the symbol for a tower is a dot within a circle like the sun symbol on the desk-top poem.

By Bookworm (Bookworm) (12-206-165-69.client.attbi.com - on Wednesday, August 20, 2003 - 07:20 am:

The symbol for the NOAA has a bird on it. In Allen's last interview he had a shirt with a bird design down the front. I think there is a picture of it in Graysmith's ZU.

By Ed N. (Ed_N) (acc0e3d2.ipt.aol.com - on Thursday, August 21, 2003 - 01:06 am:

Notice that magnetic north is 17 (and 15') east of geographic north... and 17 seems to have been an important number for Z...

By Muskogee (Muskogee) (209-223-48-7-dyndsl.oplnk.net - on Thursday, August 21, 2003 - 12:55 pm:

Mike, kudos to you for a great find!

By J Eric (J_Eric) (dialup- - on Friday, August 22, 2003 - 09:17 pm:

I think I like this, Mike Cole! Streets on this map are not identified. Quick, someone more familiar with S.F. than I, tell us: does the "magnetic" arrow point to the corner of Washington and Maple or Cherry? Because I durn well suspect it points to some place Z would visit.

By Bruce Monson (Bruce_Monson) (co-ratlsnk-u2-c6d-33.clspco.adelphia.net - on Tuesday, August 26, 2003 - 09:14 pm:

The best I have been able to determine from the map's street features is that the center of the benchmark--if you'll pardon the cliche "X marks the spot"--rests somewhere in the area of California and Locust, or Mayfair Dr and Iris St., or even Mayfair Dr and Spruce St. If so, the center point would still be about 2-3 blocks South East from Washington and Cherry, but still in the same general neighborhood!

The large street block (just to the right of the 60-70 degree range marks) is almost certainly Alta Plaza. And the Star marking "0" degrees looks to be sitting in the area between Lincoln Ave., Funston Ave., and Presidio Blvd.

Now, lining it up in this manner would send the 17-degree "Mag. N." tangent off in the general direction of, oddly enough, Vallejo!

Accuracy is hopelessly impossible without the actual maps and scale, of course, but the thought is interesting nonetheless.

Heck, maybe "X" really could "mark the spot"! ;-)

Bruce Monson

By J Eric (J_Eric) (dialup- - on Wednesday, August 27, 2003 - 10:16 pm:

Thanks for the research, Bruce! I finally dug up an old Chevron map tonight and checked things out. The tunnel to the west of the compass rote would be Route 1, and it intersects first with Lake Street south of the Presidio, then California.

The center of the rote (+) appears to be near the corner of Lake or California and Arguello Street, in the vicinity of Children's Hospital (Z always had a thing for the kiddies). Alta Plaza would be the large square at about the 65-degree mark of the outer circle. From Alta Plaza, Washington Street continues to run westward "under the rote" as it would be. Washington seems to reach the 17-degree magnetic north arrow at around Cherry or Maple. As you say, Bruce, all this is just estimation, but our road maps must be as good as Z's.

No, I am not surprised.