Plein Air Exhibit Information Only. Log in or Register to view the form. This form is for submiting your PLEIN AIR EXHIBIT announcement only. Your exhibit must be related specifically to plein air painting. Carefully fill out the form below. (If you don’t see the form below it’s because you have’nt logged in yet.) All of the information is needed for your exhibit to be listed. Please double-check everything for accuracy. Fill it out and get listed!