Derek A. Sampson

• Grump and That Mammoth Again
• Grump and the Hairy Mammoth
• Grump and the Hairy Mammoth (Read Aloud Books)
• Grump Goes Galumphing
• Follow That Pharoah
• Grump and That Mammoth Again (Read Aloud Books)
• Grump Strikes Back
• Grump Strikes Back (Read Aloud Books)
• Grump's Great Mammoth Hunt (Read Aloud Books)