Difference between revisions of "Halloween card"
(→1 pentene) |
|||
Line 13: | Line 13: | ||
== 1 pentene == | == 1 pentene == | ||
− | [ | + | [https://pubchem.ncbi.nlm.nih.gov/compound/1-Pentene Info and image] |
Revision as of 06:25, 22 June 2021
Description
This symbol appeared in the card Zodiac sent to Paul Avery on Oct 27, 1970. It also appeared on the envelope the card came in.