The images were taken by architect Dennis Calow during the city's regeneration from the mid-1950s to the 1970s.
The collection has been added to an online map created by the University of Leicester.
It is hoped it will inspire other people to share photos and memories.
Dr Simon Dixon, archives manager at the university, said at least 12,500 buildings and homes were demolished in Leicester when the clearance of working class Victorian housing resumed after being interrupted by World War Two.
He said Dennis Calow was interested in the historical value of pre-20th Century buildings due to be torn down.
Mr Dixon said the project was inspired by the growing number of Facebook pages dedicated to historical photos of cities.
He said he hoped the photos would encourage people to come forward to share information about Leicester's lesser-known lost buildings.

The 38-year-old sank 10 birdies but bogeys on the 10th and 15th prevented him building a bigger advantage.
Compatriot Jamie Lovemark is in second place after shooting a round of 65.
Five-time major winner Phil Mickleson, also American, climbed the leaderboard with a 66 and trails Dufner by six.
Scotland's Martin Laird made the cut after a 69 moved him to 10 under par but England's Luke Donald (71) missed out.

Loughborough's Ama Agbeze captains the side in the Championship section of the tournament between 12 and 15 May.
The Roses, who plan to go full-time from June this year, will face Northern Ireland, Wales and Scotland.
Gibraltar, Ireland, Israel, Malta, Switzerland, as well as teams from Grenada and USA, will compete in the competition's Challenge section.
England Roses: Helen Housby, Ella Clarke, Kadeen Corbin, Ellie Cardwell, Laura Malcolm (VC), Sophia Candappa, Hannah Joseph, Natalie Haythornthwaite, Jodie Gibson, Ama Agbeze (C), Sam Cook, Leah Kennedy.
Reserves: Eboni Beckford Chambers, Rebekah Airey, George Fisher, Gabrielle Marshall, Jess Shaw, Sara Bayman.

The European Union has approved significant changes to data laws, aimed at putting individuals back in charge of their information.
It is the biggest shake-up to privacy regulation for 20 years, according to experts.
The changes would make privacy "a board-level issue", one lawyer said.
Peter Church, a technology lawyer at Linklaters, said it would make businesses "start taking these issues a lot more seriously".
US technology companies already have an uneasy relationship with European regulators, with both Google and Facebook facing big fines - Facebook over its use of cookies and Google over its privacy policy.
Although this new law will not come into force until 2018, the changes meant the tech giants would have to "pay more attention to what regulators are saying", said Mr Church.
The new draft policy, in discussion since 2012, will need to be ratified by the European Parliament next year.
Other changes include:
Jan Philipp Albrech, chief negotiator, said of deal: "This would be a major step forward for consumer protection and competition and ensure Europe has data protection rules that are fit for purpose in the digital age."
Stewart Room, head of data privacy at PwC, said: "The scale and breadth of the EU's changes to privacy rules will deliver unprecedented challenges for business and every entity that holds of uses European personal data both inside and outside the EU.
"Most companies will be shocked at the scale of the new rules and the work that needs to be done before the laws take effect in two years - it is not much time for the magnitude of the internal changes that will be required."
Hundreds of photos of buildings demolished during Leicester's post-war slum clearance programme have been published online.
[NEXT_CONCEPT]
American Jason Dufner heads into the final round of the CareerBuilder Challenge with a two-shot lead after carding an eight-under-par 64 in California.
[NEXT_CONCEPT]
England have named a 12-strong squad for the Netball Europe competition in Newcastle next month.
[NEXT_CONCEPT]
Technology companies could face fines of up to 4% of their global annual turnover under new European rules on data protection.