Ritchie's family members who supported his works are his late mother, H. J. Ritchie, his wife Lynda Ritchie, his daughters Billie Bryan nee Ritchie, and Nellie Sunderland nee Ritchie , his only brother Paul Ritchie, and father, the late William D. Ritchie, also his three sisters the late Wilma Fox, Gail Frailey and the late Jennifer Bennett.

S

Margaret K. Sainio, Luis Salas, Greg Sankey, Bob and Shake Sarkis, Norie Sato, Chris Sayers, Gary and Cathy Saylor, Heather Scearce, Elisabeth & Matthew Scharf, Stellan Schedin, Carolyn Scheve, Dr. Saul Schluger, Anne Schwendiman, Kim Schiedermayer, Nancy Scoble, Margit Szucs Estate, Francine Seders, David Setsuda, Ann Shafer, Margaret Shannon, Katheryn Sharpe, Kristin & Matthew Sheehan, Gerard Shellan, Lori Shepard, Nicole Silvester, Barbara Simler, Harold Sims, Valentin Sivyakov, Scott Skinner, Damon Smith, Daniel Smith, Thomas Smith, Virginia Smith, The Smysee Collection, Jason & Jane Sobottka, Décio Soncini, Gordon Sondland, J. R. Sorby, Glen Spalding, The Chas Sparling Family Collection, Presha Sparling, Fox Spears, Rita Speiser, Spencer Museum of Art, Constance Speth, Matthew Spoonemore, Dolhathai Srijamcharoen, Mary Stamper, The Stanley Collection, Barbara Stanton, Victor Steinbrueck Family Collection, Jane Stephanny, Nancy and David Sternoff, Jack Stewart, Jean Stewart, John Stinson, Charles Stokes Estate, Mrs. Paul Stone, Mark Strahs, Melissa Strawser, Lee Stubbe, Richard Suchinsky, Mike and Nellie Sunderland, Gordon Sundland, Kim and George Suyama, Bob Swartz.

T

Abby Tamara, Brad Taylor & Libby Sparks, Sandra and David Taylor, Masami Teraoka, Bill Thiederman, David T. Thomas, Michele Thomas, Teddy Tillett, Samanta Trevino, Frank Trueba, Richard Trujillo, George Tsutakawa Estate, The Turner Collection, Will Tuthill, Jo Tyler .

U

Michelle Unger, Heather Urness, Lorraine Urquhart

V

Jo Van Arkel, Peggy Vanbranchi, Anne Van Dyne, Joe Van Kerkhove, Jan Van der Marck, Anne Van Oppen, Heather Van Wolf, Larry Vienneau, Gary Vesoza and Nancy Vogel.

W

Marcie Wagoner, Margie & Doug Wadden, Heiki Waher, Katherine Walker, Robert Walker, Susee Wampler, Duke Washington, Catherine Watkins, Brett and Marivic Weathers, John Weaver, Glenn Webb, Neil Wechsler, Carol Weger, Frank Weiditz, Andy Weisbecker, Dick Weiss, Linda Weissman, Lucinda Welch, Holly Welsh, Andrew Wenczel, Willa Jean Wendell, Justin West, Letitia Wetterauer, Larry Wheeler, Helen Whitlock, Ross Wiggins, Dave Wilburn & Ai Hayatsu, Donnie Wilburn, A. Williams, Ann Williams, David R. Williams, Erica Williams, Jeffrey Wilkson, Chip Wilson, George Woodall Estate, Suze Woolf-Price, Stevan Worley, Alesha Wozny, Jean Wrohan, Pei-Hsuan Wu,  Ed Wyche, Christy Wyckoff.

X

Yang Xiuting, John & Janice Xydis

Y

Lin Yee, MeganYee, Shirley Younglove, Carl Youngman and Eleanor Mathews.

Z

Jeff Zager, Ellen Ziegler, The Zuberbuhler Collection, the Zuckerman Museum of Art,  Carvel & Sarah Sue Zwingle.

Institutional

 

Anacortes, City of, Anacortes (WA); Baker University, Baldwin City (KS); Giacomo Banci, Florence, (IT); Boeing Computer Services, Bellevue (WA); Bush School, Seattle (WA); Calgary, University of, Calgary (AB); Central Washington State University, Ellensburg (WA); Cheney Cowles Museum, Spokane (WA); Davis Wright & Tremaine, Seattle (WA); DeCordova Museum, Lincoln (MA); Erica Williams/Anne Johnson Gallery, Seattle (WA); First National Bank of Boston, Boston (MA); First National Bank of Portland, Portland (OR); First National Bank of Seattle (WA); Francine Seders Gallery, Seattle (WA); Gonzaga University, Spokane (WA); H. J. Heinz Co., Pittsburgh (PA); Henry Art Gallery, Seattle (UW); King, County of, Seattle (WA); Kobe, City Collection of, Kobe (JA); Laird Norton Corporation, Seattle (WA); Marysville School District, Marysville (WA); Metcalf, Beatty, and Knapp, Seattle (WA); Microsoft Corporation, Redmond (WA); New York Archives Public Library, New York (NY); New York Public Library, New York (NY); Old National Bank, Seattle (WA); Olivet College, Olivet (MI); Oregon, University of, Eugene (OR); Pacific Lutheran University, Tacoma (WA); Philadelphia Museum of Art, Philadelphia (PA); Potsdam, State University College, Potsdam (NY); Rainier National Bank, Seattle (WA); Rare Books, UW Suzallo Library, Seattle (WA); Renton, City Collection of, Renton (WA); Renton, City of, Renton (WA); Riddell, Williams, Bullitt & Walkinshaw, Seattle (WA); Rockford College, Rockford (IL); Safeco Insurance Corporation, Seattle (WA); San Jose State University, San Jose (CA); Seattle Art Museum, Seattle (WA); Seattle Arts Commission Archives, Seattle (WA); Seattle First National Bank, Seattle (WA); Seattle First Savings and Loan, Seattle (WA); Seattle Juvenile Center, Seattle (WA); Seattle Pacific University, Seattle (WA); Seattle Sheraton Hotel, Seattle, WA., Seattle Trust and Savings Co., Seattle (WA); Segovia (Spain); Sheraton Hotel, Seattle (WA); Spokane Public Schools, Spokane (WA); Springfield Museum, Springfield (IL); Tacoma Art Museum, Tacoma (WA); Texas Technical University, Lubbock (TX); The Evergreen State College, Olympia (WA); United Pacific Reliance Corp., Los Angeles (CA); USIA, Tokyo, Japan (JA); Valley Hospital, Renton (WA); Videotape Archives, U. of W., Seattle (WA); Walnut Creek, City of, Walnut Creek (CA); Washington, State Capitol of, Olympia (WA); Washington, University of, Seattle (WA); Western Gallery, WWU, Bellingham (WA); Western New Mexico University, Silver City (NM) Zuckerman Museum of Art Marietta (GA).