| Organizations performing similar types of work |
| Id | Name | Address | State | Established | Total Income |
| 1 | World Wildlife Fund Inc | 1250 24th St Nw, Washington, DC 20037-1124 | DC | 1991-08 | $247,238,785 |
| 2 | Resources Legacy Fund | 555 Capitol Mall Ste 675, Sacramento, CA 95814-4505 | CA | 1998-12 | $82,429,232 |
| 3 | The Natomas Basin Conservancy A Ca Non-Profit Public Benefit Corp | 2150 River Plaza Dr Ste 460, Sacramento, CA 95833-4141 | CA | 1995-03 | $8,918,291 |
| 4 | Ecological Trust Fund Of Panama | 4245 N Fairfax Dr Ste 0100, Arlington, VA 22203-1637 | VA | 1999-08 | $5,185,839 |
| 5 | Canaan Valley Institute Inc | 494 Riverstone Rd, Davis, WV 26260-9731 | WV | 1996-08 | $3,657,614 |
| 6 | Guanacaste Dry Forest Conservation Fund | Biology Dept Univ Of Pennsylva, Philadelphia, PA 19104 | PA | 1998-11 | $2,367,124 |
| 7 | Environmental Resources Coalition | 3118 Emerald Lane, Jefferson City, MO 65109-3709 | MO | 2001-12 | $2,212,337 |
| 8 | Partnership For The Delaware Estuary Inc | 110 S Poplar St Ste 202, Wilmington, DE 19801-5034 | DE | 1996-10 | $1,823,434 |
| 9 | Turtle Island Restoration Network | PO BOX 400, Forest Knolls, CA 94933-0400 | CA | 1997-10 | $1,616,575 |
| 10 | Mississippi Valley Conservancy Inc | 201 Main St Ste 1001, La Crosse, WI 54601-0721 | WI | 1997-04 | $1,562,224 |
| 11 | Marine Stewardship Council Limited | 2110 N Pacific St Ste 102, Seattle, WA 98103-9181 | WA | 2001-01 | $2,055,514 |
| 12 | Christians For Environmental Stewardship | PO BOX 877, La Center, WA 98629-0877 | WA | 1996-08 | $1,154,746 |
| 13 | Nisqually River Foundation | 12501 Yelm Hwy Se, Olympia, WA 98513-9108 | WA | 2004-05 | $633,540 |
| 14 | Hoh River Tr | 1512 46th Ave Sw, Seattle, WA 98116-1626 | WA | 2005-06 | $457,645 |
| 15 | Pacific Biodiversity Institute | PO BOX 298, Winthrop, WA 98862-0298 | WA | 1998-07 | $315,058 |
| 16 | Friends Of Northwest Hatcheries | PO BOX 2044, Leavenworth, WA 98826-2044 | WA | 1999-07 | $279,240 |
| 17 | Capitol Hill Chamber Of Commerce | 1641 Nagle Pl Ste 003, Seattle, WA 98122-2447 | WA | 2007-03 | $258,552 |
| 18 | North Olympic Peninsula Resource Conservation And Development Counc | PO BOX 1858, Port Angeles, WA 98362-0279 | WA | 2002-05 | $194,114 |
| 19 | Mt Adams Resource Stewards | PO BOX 152, Glenwood, WA 98619-0152 | WA | 2004-09 | $180,936 |
| 20 | Historic Seattle Preservation Fndn | 1117 Minor Avenue, Seattle, WA 98101-4246 | WA | 1996-11 | $179,579 |
| 21 | Center For Environmental Law & Policy | 25 W Main Ave Ste 234, Spokane, WA 99201-5090 | WA | 1996-04 | $158,247 |
| 22 | Okanogan Land Trust | PO BOX 293, Tonasket, WA 98855-0293 | WA | 1991-05 | $140,175 |
| 23 | Built Green Washington | 5251 Auto Center Way, Bremerton, WA 98312-3319 | WA | 2006-09 | $122,457 |
| 24 | Harbor Wildwatch, John B Conway | 3110 Judson St Pmb 99, Gig Harbor, WA 98335-1254 | WA | 2006-06 | $60,277 |
| 25 | Living Earth Institute | 1418 Martin Luther King Jr Way, Seattle, WA 98122-3128 | WA | 1999-12 | $40,783 |
| 26 | Pinchot Partnership | PO BOX 442, Morton, WA 98356-0442 | WA | 2006-09 | $40,149 |
| 27 | Friends Of Beaver Lake | PO BOX 431, Issaquah, WA 98027-0017 | WA | 1999-08 | $35,586 |
| 28 | Preserve Our Islands | PO BOX 845, Vashon, WA 98070-0845 | WA | 1999-05 | $20,527 |
| 29 | Bellingham Bay Foundation | 2514 West St, Bellingham, WA 98225-2155 | WA | 2006-02 | $9,515 |
| 30 | Friends Of Grays Harbor | PO BOX 1512, Westport, WA 98595-1512 | WA | 1999-09 | $7,500 |
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