A file, or a dossier.
A Canon
An authoritative collection of documents is called a corpus. This corpus is usually compiled for research or reference purposes, and can consist of texts, articles, speeches, or other written materials.
The Pentagon Papers
It is a collection of interconnected documents and other resources, linked by hyperlinks and URLs
If their purpose is to preserve the documents for future reference, they would be called an archivist.
A person who studies historical documents is called a historian or a historical researcher. In a more specific context, they may be referred to as an archivist if they focus on preserving and organizing historical records.
The web
The World Wide Web is a collection of electronic documents that are linked together like a spider web. These documents are stored on computers called servers located around the world. The Web has evolved into a global electronic publishing medium and increasingly, a medium for conducting electronic commerce.
The short versiion... bills that aresubmitted to a bank from another bank for collection and payment.
DOP will mean that the instructions by an exporter to a bank that the documents attached to the draft for collection are deliverable only after his or her payment of the draft. DOA will mean that the instructions by an exporter to a bank that the documents attached to the draft for collection are deliverable after his or her acceptance of the goods.
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At collection of stamps is refered to as a stamp collection. They are frequently kept in albums. Philately is the name for the study and collection of stamps.