So far, the foundation has raised $750,000 -- just $50,000 shy of their goal.
Ramos and Liu were fatally shot two weeks ago by a lone gunman while they sat in their patrol car in Bed-Stuy, Brooklyn.
Liu's funeral service was held Sunday morning in Brooklyn. Ramos was laid to rest last weekend.
The Tunnel to Towers Foundation was created in memory of FDNY firefighter Stephen Siller. On 9/11, Siller abandoned his truck and ran through the Brooklyn-Battery Tunnel with all his gear toward the World Trade Center. He was killed when the South Tower collapsed.
For more information or to donate, visit tunnel2towers.org.
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