Creepy Cave
ATLANTIS 
July 88 - May 90

| ELK | 
| 3 | 
| Jan 89 | 
Sources
(click here for more information on the data shown below)
Electron (Gallup)
| 7 | MONTH to c.88-07-19 | ElU p4 Oct 88 88-09-15 | |
| 14 | MONTH to c.88-08-16 | ElU p6 Nov 88 88-10-15 | |
| 10 | MONTH to c.88-09-20 | ElU p6 Dec 88 88-11-15 | |
| 16 | MONTH to c.88-12-20 | ElU p6 Mar 89 89-02-15 | |
| 3 | MONTH to c.89-01-17 | ElU p6 Apr 89 89-03-15 | |
| 19 | MONTH to c.89-03-21 | ElU p6 Jun 89 89-05-15 | |
| 10 | MONTH to c.89-04-18 | ElU p6 Jul 89 89-06-15 | |
| 8 | MONTH to c.89-10-17 | ElU p7 Jan 90 89-12-15 | |
| 11 | MONTH to c.90-02-13 | ElU p9 May 90 90-04-15 | |
| 14 | MONTH to c.90-03-13 | ElU p17 Jun 90 90-05-15 | |
| 11 | MONTH to c.90-04-10 | ElU p7 Jul 90 90-06-15 | |