Wissner-Slivka Foundation Endowments Lisa’s Café Slivka Hall Philanthropy Search slivka.org The Wissner-Slivka Foundation The Wissner-Slivka Foundation is a 501(c)(3) private family foundation that was created in 1997. The majority of its grants are in support of education. The Foundation does not accept unsolicited grant requests. Why not? Last updated Tuesday, May 31st, 2005. © 1997-2018 Wissner-Slivka Foundation. All rights reserved.