21 Sure-fire Ways to as Much as Double Your Income in One Year

Jean and Cle Kinney's 1970 Parker Publishing title belongs to a confident era of American self-help — the kind that promised bold results in plain language and expected readers to act on them. At 233 pages, it covers strategies for employees and entrepreneurs alike, oriented toward concrete behavioral change rather than motivational abstraction. That action-focused structure is the real strength here, and it was characteristic of the best Parker Publishing books of the period. The honest caveat is significant: this advice is more than fifty years old, and the economic landscape, career structures, and financial tools it assumes have changed enormously. The title's bold income promise should be read as period enthusiasm, not a guarantee. Worth it as vintage self-help with genuine historical texture, but not a current income playbook.