From: Rabbi Mordechai Leib Winkler
To: Rabbi Avraham Einhorn
The responsum addresses whether it is permissible to buy ice with a note on Erev Yom Tov from an ice factory and have a non-Jew bring it on Yom Tov to prevent food spoilage, especially when three holy days are consecutive.
Source: Orach Chayim III §48