Probably the finest reference book for Star Wars hardware is one called "Star Wars Chronicles". It was first published in Japan in 1995 and then in the US in 1997. Author of the English language version is Deborah Fine.
The book has extremely high quality photos of the original miniatures, props, and costumes used in the original Star Wars trilogy, including Slave I.
Sadly, the book is not currently in print, but there are copies available from sellers on ebay and maybe other sources. BUT, it can be expensive. This huge hardcover book originally retailed for over $100. Well worth it in my opinion.
May the Force be with you!