One pair of coloured eyeshades called a 'plastograph' for observing eclipses in an envelope. The writing on the envelope reads: 'ASH June 18th 1907' then in pencil 'Total eclipse' then again in ink 'For use again in June 29-1927'. 'ASH' is Alexander Stewart Herschel, the date refers to the day Alexander died rather than that of an eclipse (the closest eclipse to that date is the 14 January 1907 visible only from central Asia and North East Africa). The eclipse on 29 June 1927 was probably noted here because it was visible from the UK.
