| # | Title | Name | Town/City | S/C/P | Region | Comment | Date |
|---|---|---|---|---|---|---|---|
| 501 | Dr. | Robert Larkin | Colorado Springs | CO | USA | N/G | Oct 23, 2009 |
| 502 | Mr | Clint Gibler | N/G | N/G | N/G | N/G | Oct 23, 2009 |
| 503 | Dr | James Duvall | San Pablo | CA | USA | N/G | Oct 23, 2009 |
| 504 | Mr | Liam Damewood | Davis | CA | USA | N/G | Oct 23, 2009 |
| 505 | Ms. | Margareta Lelea | Lewisburg | PA | USA | View | Oct 23, 2009 |
| 506 | Prof | Waldo Tobler | N/G | N/G | N/G | View | Oct 23, 2009 |
| 507 | Dr. | Megan Wyman | N/G | N/G | N/G | View | Oct 23, 2009 |
| 508 | Mr | Erik Mickelson | N/G | N/G | N/G | N/G | Oct 23, 2009 |
| 509 | Mr | Wayne Beebe | N/G | N/G | N/G | N/G | Oct 23, 2009 |
| 510 | Ms | Veneranda Xochitl Juarez- Varela | Davis | CA | Mexico | View | Oct 24, 2009 |
| 511 | Dr | Charles Schweik | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 512 | Mr. | Marq Truscott, ASLA | Davis | CA | USA | N/G | Oct 24, 2009 |
| 513 | Mr. | William Ballantine | Carmichael | CA | USA | N/G | Oct 24, 2009 |
| 514 | Ms | Dina Biscotti | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 515 | Mr | Homan Rajai | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 516 | Mrs. | June Sherman | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 517 | Mrs | Rosana Womack | Sacramento | CA | USA | View | Oct 24, 2009 |
| 518 | Miss | Ellen Yau | Davis | CA | USA | N/G | Oct 24, 2009 |
| 519 | ms | kristin reynolds | N/G | N/G | USA | N/G | Oct 24, 2009 |
| 520 | Mr. | Anonymous | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 521 | Mr | Vahid Rezaei | N/G | N/G | USA | N/G | Oct 24, 2009 |
| 522 | Mr. | Christopher Uejio | N/G | N/G | USA | N/G | Oct 24, 2009 |
| 523 | Ms | Anonymous | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 524 | Dr. | Kathleen McAfee | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 525 | Ms | Johanna Ostling | N/G | N/G | N/G | View | Oct 24, 2009 |
| 526 | Dr | Xixi Zhao | N/G | N/G | N/G | N/G | Oct 24, 2009 |
| 527 | Mr | James Klepek | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 528 | Ms | Nancy Mathison | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 529 | Dr. | Gregory Pope | N/G | New Jersey | USA | View | Oct 25, 2009 |
| 530 | Dr. | Ryan Galt | Davis | CA | USA | N/G | Oct 25, 2009 |
| 531 | Ms | Sara Safransky | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 532 | Dr. | Eric Compas | Whitewater | WI | USA | N/G | Oct 25, 2009 |
| 533 | Mr | Brian Dick | Sacramento | CA | N/G | N/G | Oct 25, 2009 |
| 534 | Ms. | Maggie Lickter | N/G | N/G | USA | N/G | Oct 25, 2009 |
| 535 | Mr. | Tarecq Amer | Albany | CA | USA | N/G | Oct 25, 2009 |
| 536 | Ms | Anonymous | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 537 | Dr | Kurt Cuffey | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 538 | Ms. | Kelsey Meagher | Irvine | CA | USA | View | Oct 25, 2009 |
| 539 | Ms. | Heather Lee | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 540 | Ms. | Jamie Shinn | N/G | N/G | N/G | N/G | Oct 25, 2009 |
| 541 | Dr | William Moseley | Saint Paul | MN | USA | View | Oct 25, 2009 |
| 542 | Dr. | Charles Francis | Lincoln | NE | USA | View | Oct 26, 2009 |
| 543 | Mr | Matthew Branch | N/G | N/G | N/G | View | Oct 26, 2009 |
| 544 | Mr | Dennis Dingemans | Davis | CA | USA | View | Oct 26, 2009 |
| 545 | Mr | Jerry Stacionis | Woodland | CA | USA | N/G | Oct 26, 2009 |
| 546 | Dr. | V. Ernesto Mendez | N/G | N/G | N/G | View | Oct 26, 2009 |
| 547 | Ms | Jennifer Borlick | N/G | N/G | N/G | N/G | Oct 26, 2009 |
| 548 | Dr. | J. Christopher Brown | N/G | N/G | N/G | N/G | Oct 26, 2009 |
| 549 | Mrs | Margaret Swisher | N/G | N/G | N/G | N/G | Oct 26, 2009 |
| 550 | Mr. | Mark Chin | N/G | N/G | N/G | N/G | Oct 26, 2009 |
- S/C/P - State, County or Province
- Dates displayed in the signature list are based on UTC/GMT
- Anonymous signatures signify people who have chosen not to display their names publicly
- A comment in gray indicates that the signer has hidden their comment from public view