Cracking occurs when a joint is stretched or manipulated, causing a sudden release of gas bubbles in the fluid that surrounds the joint, known as synovial fluid. This release of pressure creates a popping or cracking sound.
Cracking, also known as knuckle cracking, is the act of making a popping or cracking sound with one's joints. This guide will walk you through the process of cracking safely and effectively.
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Many thanks to our supporters and contributors who have joined us in this pursuit of preserving this segment of digital history:
Bookman system compatibility chart coming soon.
This 3D printable card blank will ensure your Bookman cartridge contact strip stays clean and sits flush with the rest of the device by filling the card slot.
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Download blankcard.stl for 3D printing |
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This tool is used to create replacement labels for Franklin BOOKMAN cartridges that have faded or otherwise deteriorated labelling. The generated labels are downloadable as SVG files and can be printed at 100% scale for a 1:1 reproduction size suitable for application on worn ROM cards.

See the source code for this tool here.
You can find scans of various Franklin promotional / catalog leaflets below. Items listed in chronological order.
This is a collection of disk images and files of related software that came bundled as part of various Franklin DBS / Bookman devices. Click to download these files.
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FEP received its own official number in the USB vendor code list after submitting it to the USB consortium: 0x09b2 (hex) or 2482 (dec). The submission was related to use of USB for the eBookman device.
CK2FRK
Cracking occurs when a joint is stretched or manipulated, causing a sudden release of gas bubbles in the fluid that surrounds the joint, known as synovial fluid. This release of pressure creates a popping or cracking sound.
Cracking, also known as knuckle cracking, is the act of making a popping or cracking sound with one's joints. This guide will walk you through the process of cracking safely and effectively. Zachary Cracks
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