Publishes a redesigned Red Box circuit, appeals to readers to recruit subscribers instead of raising prices, and covers regional wiring variations of the ‘T network’ along with continued reader information-trading. Read more →

Al Bell’s origin-story editorial frames YIPL as a deliberate provocation against the phone company, explaining the Black Box for dodging message-unit charges, a tone trick for triggering false alarms on Bell’s new blue-box detectors, and a new reader information-trading department called ‘Destructory Assistance.’ Read more →

Answers reader questions on tuning red box volume and warns that blue-box detectors are being deployed, publishes a fresh batch of credit card numbers and overseas dialing codes, and describes Bell’s internal operator-training and secrecy culture. Read more →

Cites a reader report that the NSA monitors all trans-Atlantic and trans-Pacific calls, publishes corrections and deeper technical notes on the Red Box, warns of a New York City subway slug scheme, and prints a country-code list for direct-dialing international calls. Read more →

Recaps the July 1972 NYC Phone Phreak Convention, reports wire fraud charges against John ‘Captain Crunch’ Draper and solicits donations to his defense fund, and publishes full schematics for the Red Box coin-tone oscillator. Read more →

Announces the ‘World’s First Phone Phreak Convention’ in Miami Beach and publishes complete build instructions for a black box that lets any phone receive free long-distance calls, noting the article mirrors one Ramparts magazine had published and then suppressed under phone company pressure. Read more →

The Boston Peoples Yellow Pages, Start Your Own Chapter of YIP, Critique of “Steal This Book”, etc. Read more →

Publishes full build instructions for the ‘Super-Duper Project,’ an early black box circuit that lets a home phone receive long-distance calls free of charge, alongside a renewed boycott call against ITT and its subsidiaries. Read more →

Reports that readers cracked the new 1972 credit card code and publishes the prefix table, advertises an induction-coupler earpiece for quieter blue-boxing, and debunks folk methods for detecting a wiretap. Read more →

Explains the redesigned 1972 credit card billing code and a separate ‘Code Billing System’ exploit, encourages readers to prank-call Southern Bell’s chief of security, and gives an early write-up of what would become the ‘black box’ for receiving free long-distance calls. Read more →

Confirms the technical accuracy of Ron Rosenbaum’s Esquire blue-boxing exposé, restates YIPL’s mission as a reader-supplied information pool, and publishes a table of 1972 credit card billing codes by city along with tips for avoiding detection when boxing from pay phones. Read more →

Do Not Read This!, Remember the Blue Box?, Letters & Answers, Carolina Plain Dealer Ripoff, etc. Read more →

Special Pay Phone Issue, Abbie Hoffman on Pay Phone Justice, Monkey Warfare, etc. Read more →

YIPL Price Change, Bell Employees!!!, Statement of Purpose, Fuck The Mail, The Private Ear, Steal This Book, etc. Read more →

Reprints a New York Times report on a Long Island blue-box arrest, explains the tone-pair frequencies behind blue boxing, and features a published debate between columnist Russell Baker and Abbie Hoffman over whether ripping off the phone company helps or hurts the counterculture. Read more →