vitrine · corridor · pairwise
1910s ↔ 1980s
Fact families the measure guard certifies comparable for this pair. Everything else renders as the gap it is. Every value links to its record.
A new car — affordability
1910s · Tier A
~$1,188 (average wholesale, computed from factory sales) ≈ 4,569 hours of work
1980s · Tier A
$7,557 ≈ 1,103 hours of work
Life expectancy at birth
years (all races, both sexes)
⚠ Decades before the 1960s published white-only male/female life tables with no all-races total — the placard carries the sexed figures and the chart renders the gap rather than a spliced concept.
1910s · Tier A
50.2 male, 53.6 female (white) — see the placard
1980s · Tier A
70.0 male, 77.5 female (73.7 total, all races)
Homeownership
% of occupied housing units owner-occupied
Household landline telephone
% of households
⚠ The 1900s source combines several technologies in one headline percentage, so its 5% is not plotted as a telephone datum.
⚠ 1910s–1930s sources counted telephones per 1,000 population, not households — those decades render as gaps rather than a unit splice.
1910s · Tier A
~13 per 1,000 population (1915) — see the placard
1980s · Tier A
92.9% (7.1% without telephone)
Women's unpaid home production
hours per week, prime-age women
⚠ From 2010s onward the source is ATUS (all adults 15+, hrs/day, narrower 'household activities'), not Ramey (prime-age women 18-64, hrs/week, broader 'home production') — a concept splice. ATUS facts remain available in their rooms, but render as linked gaps on this weekly axis rather than as a false decline.
Men's unpaid home production
hours per week, prime-age men
⚠ From 2010s onward the source is ATUS (all adults 15+, hrs/day, narrower 'household activities'), not Ramey (prime-age men 18-64, hrs/week, broader 'home production') — a concept splice. ATUS facts remain available in their rooms, but render as linked gaps on this weekly axis rather than as a false rise or decline.