The brochure is part of a voter registration drive and also contains a copy of the ballot paper with the question: "Should the United Kingdom remain a member of the European Union or leave the European Union?".
On one page the Britain Stronger In Europe campaign listed its main points, including a stronger economy, leadership on the world stage, the ability to fight cross-border crime and EU-linked jobs.
"All this would be at risk if we left Europe," it said.
"It's safer to take back control than to keep giving away power and money every year to the EU," it said.
The deadline to register to vote in the June 23 referendum is June 7 and Electoral Commission officials said they have seen a "surge" in registrations, including from British expatriates.
A polling average compiled by the What UK Thinks website put the "Remain" and "Leave" camps neck and neck at 50 per cent each, although polls indicate up to a fifth of the electorate are still undecided.