National Indoor Football League
professional US football league
The National Indoor Football League (NIFL) was a professional indoor football league in the United States. For their first six years, the league had teams in markets not covered by the Arena Football League; however, that changed briefly with their expansion into AFL markets such as Atlanta, Denver, San Antonio, Miami and Los Angeles. The league folded in 2008.
History
The NIFL, based in Lafayette, Louisiana, was founded by Carolyn Shiver. The league started operations in 2001, with many teams coming from Indoor Football League being bought the previous year and folding operations. In 2002, the league added in the teams from the Indoor Professional Football League. 2003 was the most successful year for the league as 24 teams played a mostly complete schedule, with few cancellations.
Before the 2005 season, nine teams left the league to form United Indoor Football. That same year, the Intense Football League ceased operations and four teams from there joined the league. Those teams, however, left the league before the 2006 season started.
“National Indoor Football League” enters the record as professional US football league. Crown Archives preserves that source wording while asking what National, Indoor and Football can confirm, complicate or overturn.
Why this record matters
“National Indoor Football League” is worth following because a concise public description often conceals a longer documentary argument. Here, National, Indoor and Football provides the most credible route into that argument.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 19, 2026. The linked authority identifier is Q1384926. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2008, 2001, 2002 and 2003.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “National Indoor Football League”, its source revision and the description used here.
- Expand the search: follow National Indoor Football League primary sources, National Indoor Football League archive and National research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “National Indoor Football League”?
- Which institution is responsible for the underlying evidence?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “National Indoor Football League” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.