Possible Clues:

• Wee
• Minute: parts of it covering years and years
• Clever people losing the head with heartless young man falling over - it's, yes, of little substance!
• Very small, tiny
• *Like a nursery rhyme spider
• Very small
• Teensy-weensy
• Teeny-weeny
• Ritzy rhymes of little substance
• It has pieces of information year after year, very little