Census boundary evidence
Langdon vl (T23 R27 MW4) — 1911 census geography (AB)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- AB001017_1911
- Source boundary identifier
- AB001017
- Census vintage
- 1911
- Source label
- Langdon vl (T23 R27 MW4)
- Province code
- AB
- District label
- Calgary
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Langdon vl (T23 R27 MW4)
TCP UID: AB001017
Census source records
Each link states the assessment that connected the source row to this map. Name candidates remain candidates; no source statistic is silently assigned to the map.
- Langdon vl (T23 R27 MW4) — 1911 · 1911_V1T1, row 112 unique_contextual_name_candidate
- Langdon vl (T23 R27 MW4) — 1911 · 1911_V2T2, row 23 unique_contextual_name_candidate
Boundary intersections across censuses
These are computed polygon intersections in the equal-area CRS ESRI:102001. Fractions describe the area of the earlier and later polygons, respectively. They do not establish historical succession, and population has not been apportioned by area. All positive intersections are retained, including very small contributions.
| Other census representation | Years (earlier → later) | Overlap (m²) | Fraction of earlier area | Fraction of later area | Evidence |
|---|---|---|---|---|---|
| Langdon · 1901 | 1901 → 1911 | 2635765.2658935976 | 0.002839001557228109 | 1.0 | LATER_WITHIN_EARLIERHistorical succession verified: False |
| 220. Shepard · 1921 | 1911 → 1921 | 0.3082827334063935 | 1.1696137641523897e-07 | 3.922273400248868e-10 | PARTIAL_OVERLAPHistorical succession verified: False |
| Langdon, VL · 1921 | 1911 → 1921 | 2635764.9576108838 | 0.999999883038631 | 0.9999998207320122 | APPROXIMATELY_EQUAL_EXTENTHistorical succession verified: False |
Continuity assessments
- Langdon vl (T23 R27 MW4) (1911) → Langdon, VL (1921): name_change_requires_review