TRIPOLI, April 25 (Reuters) - Flicking through an old book about Libyan history he never imagined he could buy under Muammar Gaddafi, Ashraf Hussein points to a picture of Tripoli's main square in the 1920s.
"This is where we are standing now, Martyrs Square. Back then it was called Piazza Roma," the 31-year old history masters student said, referring to Libya's Italian colonial days.
"Such books were forbidden before because they told the true history of Libya - Gaddafi did not want that. I bought many such books today."
Hussein was one of the hundreds of Libyans who descended on the capital's Martyrs Square this week to browse through thousands of books in Tripoli's first major second hand book sale after the 2011 war that ousted Gaddafi.
With live traditional music in the background, the crowd huddled around tables, perused and bought books about history, philosophy, geography, poetry, cooking, martial arts and novels.
Organisers of the three-day fair, who will use the funds to build a mobile library that will visit schools, said Western books sold out first on the first day - namely the "Harry Potter" collection.
After a busy first day, they had to cancel the morning opening hours of the fair to make sure there were enough books in the busier evening hours.
"The number of visitors exceeded expectations and there were less and less books," said 25-year old Rami al-Shaheibi, who donated some books. "Now we know Libyans are eager for these books. Next time, we will try to provide more, especially English novels and those from other Western cultures."
Under Gaddafi, Western books were banned under certain periods - while those depicting heroes of the resistance movement against Italian colonialism and independence later were not given the attention they deserved, Libyans say.
Books about King Idris, who Gaddafi ousted in his 1969 coup, were also not available, and any mention of him was usually negative. Instead Gaddafi's Green Book of political ramblings was everywhere.
"There is such a great variety of topics here; many of the topics were off limits before because they were against the regime's ideologies," state employee Salem Ayayd said.
"Only later you could find such things on the Internet but that was not accessible to all."
Some 60 volunteers from civil society organisations such as the al-Tanweer (Enlightenment) Movement that focuses on culture, organised the fair by putting up posters in neighbourhoods and messages on Facebook. They managed to collect some 7,000 books.
"This is not about making money or doing business. We want encourage reading, open people's minds through books," Nizar Abudayna, one of organisers, said.
Some visitors beamed as they bought many books for less than 20 Libyan dinars ($15). "There is a saying 'When you buy books, you buy happiness," Suleiman Mansour, another organiser of the sale, said. "Right now, my happiness is indescribable as I look at all the people buying books."
Among the books on sale, there were some publications by authors affiliated with the former regime, which irritated some visitors. "Some people may be annoyed but every book should be given a chance to be put on display," organiser Abudayna said.
"We don't want to limit people's minds again." (Editing by Marie-Louise Gumuchian)