Angelo Tillery was the interior illustrator for the Baby-sitters Club books. His black and white illustrations appeared in:
- The six Portrait Collection books
- The "Scrapbook" pages which could be found at the end of each regular series book that was released after the 1995 redesign.
- The photo strip of Mary Anne and Dawn found in The Baby-Sitters Club Chain Letter
- The following Super Special books:
- The following special pages at the end of the BSC Calendars:
- 1991 BSC calendar - Stoneybrook family portraits
- 1992 BSC calendar - pictures of Baby-sitters with favorite charges
- 1993 BSC calendar - baby pictures of the baby-sitters
- 1994 BSC calendar - portraits of the baby-sitters in their bedrooms
These photos were later republished in the Scrapbook pages found in the reprint books published after September 1995.