Doll collectors, enthusiasts and artists are invited to participate in a doll competition and show from 10 a.m. to 3 p.m., Sunday, April 25. Categories include antique, vintage, modern, reproduction and original art. Entry fees are $4 per doll for adults; and $1 per doll for children 12 and younger. RSVP is required by Saturday, April 17. Call 579-9271, or visit www.tucsondollshow.com for more information.