The Historic Environment Image Resource (HEIR) project at the School of Archaeology, University of Oxford is digitising historic lantern slides, dating from the late 19th to mid-20th centuries, in various collections in the University. Photographs cover a wide geographical area.  An app developed in conjunction with the digitisation project enables users to upload their own current photographs of the sites represented in the lantern slides, and help HEIR archivists to create keywords for the digitised images.

Image database: http://heir.arch.ox.ac.uk
Project blog: https://heiroxford.wordpress.com/
Twitter: @HeirOxford

A crowdsourcing initiative to make archaeological archives and artefacts digitally accessible. Originally an Arts and Humanities Research Council (AHRC) funded project, Micropasts began in 2014 as a collaboration between the British Museum and the UCL Institute of Archaeology.  Since then a variety of transcription and photomasking projects have been undertaken in collaboration with a number of learned societies and museums.

Notable projects include transcription of the British Museum's Bronze Age Index; transcription of the Egypt Exploration Society's Amarna Object Cards; transcription of Flinders and Hilda Petrie's diaries; photomasking of artefacts for 3D images/prints from the collections of the British Museum, the Petrie Museum, the Mary Rose Trust, and the Palestine Exploration Fund.

Further reading:
Bonacchi, C. et al. 2014. Crowd-sourced Archaeological Research: The MicroPasts Project. Archaeology International 17, pp.61–68. DOI: http://doi.org/10.5334/ai.1705

Website: www.crowdsourced.micropasts.org
Blog: www.research.micropasts.org
Twitter: @MicroPasts