This donation is contingent on the CRA Board approval. This letter should acknowledge the gift of stock, such as the name and number of shares.A donation acknowledgment letter (sometimes called a donation receipt or thankyou letter) is an email or paper that recognizes a charitable contribution. Your letter should acknowledge the gift of stock, including the ticker, the number of shares, and the date of the donation. Donate to Tunnel to Towers to Support America's heroes and their families. Help Veterans and First Responders. We accept a wide variety of gifts including cash, real estate, life insurance, retirement plan designations, stock sales, and securities.