Research time
Tracking down manuals, trade-press advertisements, patent filings, and dated primary sources so each equipment file can carry claim-level citations instead of folklore.
Reference desk · Support
Donate to the cause
An archive this size is not generated from a single pass. Every date, price, and quotation on these pages had to be found, read, and checked against something that still exists. Donations pay for that slow work and for the rights and hosting that keep the result readable.
Support the archive
Give through Venmo or Cash App
Resonant is built one verified record at a time: research hours, archival image rights, and the hosting that keeps every era, equipment file, and citation free to read. If this archive is useful to you, a donation of any size keeps the next entry moving.
Payments go directly to the archive’s editor through Venmo and Cash App. Resonant is an independent project rather than a registered charity, so donations are not tax-deductible and nothing is sold or subscribed to in return.
Where it goes
What a donation funds
Image rights & hosting
Licensing or reproducing archival photographs properly, plus the hosting and domain that keep eight eras of chronology online and readable on a phone in a queue line.
Keeping it open
No paywall, no account, no advertising. Every era, equipment file, glossary entry, and citation stays free to anyone who arrives.
Before you send
Donations reach the archive’s editor directly through the two services listed above — @mercer-aplin on Venmo, and $MercerAplin on Cash App. Nothing is sold or subscribed to in return, no recurring charge is set up, and because Resonant is an independent project rather than a registered charity, donations are not tax-deductible. If a payment needs to be traced or a donation should not have been made, use the reference desk and say so.
Other ways to help