These alumni of the Class of '91 have yet to be located. If you know where to find any of them, please have them get in touch with us!
| Erica Ackerman | Richard Hoffner | Frank Oliveri |
| Julio Nestor Aedo | Geoffrey Holland | Emma Ortiz |
| Michael Zoltan Albert | Theron Holmes | Bryan Otto |
| Karen Appleton | Kristen Horvath | Andrew Pagano |
| Julio Aquila | Lisa Horwath | Laura Ann Palaszynski |
| Anthony Armao | Rebecca Howell | Annamarie Pucillo |
| Chris Baksa | Jennifer Hurlburt | Troy Pulley |
| Eric Baran | Kimi Irvine | Susan Pysher |
| Mark Barbarics | Jennifer Lynn Jaikes | Jorge Ramos |
| Raymond Barner | Christopher Jenkins | Clint Ramsberger |
| Christopher Bartal | George Johnson | Jennifer Reccek |
| John Basic | Richard Johnson | Tricia Redding |
| Christopher Beck | Lakeicha Jones | Nellann Marie Reed |
| Karin Bengston | April Jordan | William Reichard |
| Shaun Benner | Charles Karam | Shannon Reichel |
| Dean Bertram | Donna Kauffeldt | Michael Reifinger |
| Cynthia Biello | Daniel Kaufmann | Michael Relvas |
| Allison Eva Biggie | Jan Kaulfers | Mark Anthony Rempp |
| Andrea Bihanskyj | Colleen Kelly | Belinda Repnyek |
| Jemaan Bolton | Shawn Kelshaw | Cynthia Ritter |
| Brian Boreman | Craig Kennedy | Eddie Rivera |
| Maryellen Ann Borghi | Kevin Kincaid | Marcelino Rivera |
| Heather Boyer | John Kinsey | Jason Rodriguez |
| Heather Breidinger | Keane Knappenberger | Karin Romano |
| Dennis Brinley, Jr. | Shirley Knight | Samantha Rosario |
| Nicole Kathryn Bubba | Danielle Koch | Joan Rossini |
| Stacey Ann Butryn | Lisa Kolditz | Brian Roth |
| Robert Campbell | Edward Kraus | Sarah Rousset |
| Alicia Cantlie | Kristen Kresge | Brian Rush |
| David Carey | Stephanie Kudera | Paul Russo |
| Jason Carl | Maura Kugelman | Scott Sabatine |
| Donna Chavous | Brian Kugler | Jason Sabol |
| Cynthia Check | Christopher Kulp | Christine Sanchez |
| Christopher Christman | Stephen Kulp | Nellie Santiago |
| Michelle Cintron | Vasudha Kuruganti | Frank Sarosi, Jr. |
| Stephanie Clapp | Faith Ann Kuzio | Thomas Schadle |
| Jacob Cohen | Kevin Landis | Thomas Schafer |
| Lynn Cole | William Lankford | Taylor Schaffer |
| Kimberly Cope | Kristin Laskowski | Robert Schaller |
| Maria Enid Correa | William Lauer | Kevin Schoenauer |
| Jason Cort | Charles Lawhead | Jason Schossler |
| Alma Cruz | William Lease | Yvette Schreiber |
| Dawn Csaszar | Wendylee Lechman | Susan Schubert |
| Roger Csatari | Melissa Lee | Michael Schultz |
| Clinton Cummings | Michael Lehr | Gregory Selby |
| Stacy Curry | Peter Lenig | Melanie Senick |
| Vincent Curto | Robert Litts | Christopher John Sieto |
| Gregg Danyi | Brian Long | Victoria Silfies |
| Brian Davis | Jennifer Rachael Long | Angela Beatrice Silvasi |
| Nicholas DeCesare | Keith Luhrs | Kristijan Sirola |
| Susan Dewalt | Mark Lutzi | Christopher Smith |
| Suci Diaz | Christina Ann Maffea | Richard Smith |
| Tara Disante | Ellen Makey | Mario Solis, Jr. |
| Michele Donato | Scott Malley | Wilma Solivan |
| Douglas Dooley | Tracey Mann | Wilfredo Sostre |
| Valerie Dougherty | Stephen Marakovits | Ivette Soto |
| Jeffery Dries | Lori Marouchoc | Amy Spangler |
| John Drych | Lisa Martelluci | Kenneth Spaulding |
| Michelle Duch | Andrea Martens | Bradley Stevens |
| Stephanie Ann Dudla | Leann Martin | Autumn Stevenson |
| Brian Dudley | Donna Martlock | Robert Jeffrey Stoll |
| Otelia Duffy | Jennifer Martucci | Michael Stuard |
| Diane Durfey | Tammy Mason | Frank Sulla |
| Shari Elonis | Julio Matos | Bridget Takacs |
| Devon Emrey | Michele McNair | Melissa Taylor |
| David Evans | Brain Mease | Yvonne Thomma |
| Christopher Fehr | Daniel Megenhardt | Jodey Thompson |
| Erica Ferraira | Scott Meixell | Jason Timko |
| Pamela Fitzsimmons | Eleanor Ann Marie Melendez | Michael Todaro |
| Ronald Frederick | Wilfredo Melendez | Anthony Triscari |
| Michael Fresoli | Maria Carmen Menacho | David Tuomey |
| Jennifer Gallagher | Nestor Meza | Ronald Ulicny |
| Stephen Ganssle | Kari Michael | Awilda Vazquez |
| Frank Garcia | Stephen Michaylira | Amaris Velazquez |
| Harry William Garcia | Jeffery Milan | Carol Villafane |
| Susan George | Andrew Miller | Scott Wachinski |
| Paul Getz | Edwin Morales | Carrie Wachter |
| Terrence Getz | William Morales | Christopher Wald |
| Kallie Giambilis | Richard Morgan | Stacy Walker |
| Lynn Mary Glass | Joseph Charles Mormak | Patricia Walter |
| Richard Gomes | Michael Mory | Craig Weaver |
| Tanya Granitz | Christie Moser | Tracy Lee Weaver |
| Gretchen Gray | Jennifer Elizabeth Mueller | Lisa Weierbach |
| Teal Gregus | Charles Muldor | Sidney Weng |
| Michael Gruver | Kelly Nauman | Caryn Wetcher |
| Brian Hall | Joseph Negron | Heather Felicia Wetzel |
| Brian Halpin | Christopher Nemeth | Orlando White, Jr. |
| Tracey Handlovic | Daniel Nemura | Christopher Whitmore |
| Katherine Harrington | Thomas Newell | Stacy Wilbur |
| Erin Hartzell | Jennifer Ng | Daniel Williams |
| Michael Heintzelman | Scott Noblett | Michael Wimmer |
| Sheri Henn | Marilyn Nunez | Chad Wood |
| Gregg Henry | Samuel Odenwelder | Stacy Wranovics |
| Christopher Hensel | Deanna Ojeda | Michele Yost |
| Keri Hintze | John Oldt | Lori Ann Zimmerman |
| Kimberly Hoffert | Barry Oliveri | Michael Zumas |