Donate

You may print or photocopy the copyrighted items on this website (ex., periodic tables) for your personal use or for LIMITED distribution (ex., for your students, friends, or family) free of charge (see Terms of Use).

However, I appreciate donations for the prints and photocopies you make. Of course, donations are not requested for products you buy at the Wlonk Shop. Donate whatever amount seems reasonable to you. I spent a long time researching and creating these periodic tables.

Just click the button to donate (requires a credit card) or send a check (see Contact Info).

Suggested donations:
Set of letter-size printouts or photocopies: $0.25
Set of posters: $1 small, $2 medium, $3 large
A "set" is either one or both of Elements in Pictures and Elements in Words.