VOLUNTARY SUPPORT

Support Delta-Sierra

Delta-Sierra publishes dossiers, books and resources that remain freely accessible. Support creates more capacity for research, verification, translation, tools and distribution.

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Funding gives no right to control published conclusions.

What support makes possible

Research and verificationSources, calculations, documentation, review and updates.

Tools and infrastructureHosting, maintenance, data, visualisations and interactive resources.

Translation and publishingInternational editions, layout, visuals and editorial preparation.

Distribution and printDigital distribution and, when useful, printing and mailing dossiers or books.

Support

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Choose any amount on PayPal’s secure page.

Support once

Support monthly

Monthly support provides continuity. Choose the amount that suits you; you can manage or cancel the subscription from your PayPal account.

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Tax treatment

This support is not presented as qualifying for a tax reduction.

Public visibility and anonymity

Delta-Sierra does not display a public list of supporters on this page. Information required to process payment is handled by PayPal as part of its service.

Structured support

Considering larger support, personally or on behalf of an organisation? The path is simple: understand what added capacity can accelerate, then contact me if you want to go further.

Explore structured support Contact me

Reading remains free. Supporting is optional.