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b. 1935 • American

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Portland State University professor

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Professional documentation gives you clarity, portability, and confidence in your collection.

Learn why collectors document their holdings online

Cross-Platform Access

Your collection, accessible anywhere

Access your collection from any device with our cloud-based platform. Native mobile apps provide seamless synchronization and offline browsing, ensuring your collection data is always at hand.

Harold Alvin Sims

Biography

Track Harold Alvin Sims

Professional documentation gives you clarity, portability, and confidence in your collection.

Your collection, accessible anywhere

Harold Alvin Sims

Biography

Track Harold Alvin Sims

Professional documentation gives you clarity, portability, and confidence in your collection.

Your collection, accessible anywhere