The New Oxford Picture Dictionary: English/Spanish (for adults)
  Hippocrene Children's Illustrated Spanish Dictionary (for kids)

• Basic Oxford Picture Dictionary (Spanish/English Edition) (for kids)
• Berlitz Spanish Picture Dictionary (for kids)
• Just Look'N Learn Spanish Picture Dictionary (for kids)
• Let's Learn Spanish Picture Dictionary (for kids)
• My First Spanish Picture Dictionary (First Picture Dictionaries) (for kids)
• My First Visual Dictionary/Mi Primer Diccionario Visual (for kids)
• My World in Spanish Coloring Book and Picture Dictionary (for kids)
• Open Sesame Picture Dictionary/Spanish (for kids)
• Spanish Picture Dictionary (for kids)
• Word by Word Picture Dictionary Spanish/English Edition (for kids)

Other Links

• WannaLearn "Spanish" Page - free online tutorials and instructional resources for the Spanish language.
• WannaLearn "World Languages" Page - free online tutorials in a large variety of languages.
• Yahoo! "Specific Languages" Page - huge directory of multilingual language learning sites.