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  1. Kovels Online Price Guide
    Auto parts and accessories are collectors items today. Gas pump globes and license plates are part of this specialty. Prices are determined by age, rarity, and condition. Signs and packaging related to automobiles may also be found in the Advertising category.
  2. Oldgas.com Book Store
    Specializing in books about oil and gas collectibles, petroleum history, restoring old gas pumps and signs, value guides and roadside nostalgia
  3. Onta Fossil Fuels
    Onta supplies coal and oil fossil fuel specimens, samples and sets in small affordable quantities for education, geology, science, chemistry, physics and research.
  4. PCM Publishing Research
    Historical research regarding petroleum marketing or petroleum collectibles Each project is unique Contact us for more information
  5. The 10,000-Year Calendar
    Create a calendar for any month in any year 1 - 10000 A.D. Useful for researching the past or planning for the future.
  6. US Patent Office Issue Years and Patent Numbers
    Table of issue years and patent numbers, for patents issued since 1836. Look up a patent number and find the year it was granted. Great for antique research.

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