Patrons—Philip Hefner Fund
Our appreciation is expressed to those listed below, who have made a contribution or pledge (as of 18 June 2019) to Zygon's Philip Hefner endowment fund, established to honor Philip Hefner for his twenty years of service as editor of Zygon. Donors wishing to support Zygon in this way may find more information and download a pledge/donation form at . Contributions up to a total of $70,000 will be matched.
| Guarantors ($2,000 and over) | |
| Solomon H. Katz | Karl E. Peters |
| Sustainers ($250 to $999) | |
| Stephen Modell | |
| Sponsors ($100 to $249) | |
| Varadaraja V. Raman |
Patrons—Annual Fund
Our appreciation is expressed to those listed below, who have made an annual contribution (as of 18 June 2019) of an amount in the stated categories. New contributors will be added to this list in future issues. Donors wishing to support Zygon in this way may find more information and download a pledge form at .
| Sustainer ($250 to $999) | |
| W. Michael Johnson | Mary Evelyn Tucker |
| Sponsors ($100 to $249) | |
| N. Kermit Olson | William and Marie Rottschaefer |
| Varadaraja V. Raman | |
| Friends ($25 to $99) | |
| William and Bonnie Falla | |
| Memorial Gifts | |
| In memory of | |
| Toni Olson , | |
| given by N. Kermit Olson |