Recently I've become enamored with very slim volumes, and am always looking for more.

I'd prefer non-romance novels, published between 1940 and today.

Some slim novels I've enjoyed: Breakfast at Tiffany's, and A Cup of Tea by Amy Ephron.

Any good suggestions?

In Our Strange Gardens

Night

Bone

and I also liked A Cup of Tea (as you already have listed)

"The Lover" by Marguerite Duras

Plum Lucky by Janet Evanovich-163 pages of fun.

The page numbers aren't posted but I read this a long time ago and I don't remember it being very long: She Taught Me To Eat Artichokes by Mary Kay Shanley   http://www.paperbackswap.com/book/details/9781882835102-She+Taught+Me+to+Eat+Artichokes+The+Discovery+of+the+Heart+of+Friendship

OK this is actually 211 pages in Hardback but I'll add it anyway:  Shakespeare's Christmas by Charlaine Harris http://www.paperbackswap.com/book/details/9780312193300-Shakespeares+Christmas+Lily+Bard+Bk+3  None of the books in here Shakespeare  or Aurora Teagarden series are very long.  There nice little reads that don't require a long commitment.

The Prophet by Kahlil Gibran   http://www.paperbackswap.com/book/details/9780140195866-The+Prophet 128 pages although I just noticed it was published in 1923.

I highly recommend Interpreter of Maladies by Jhumpa Lahiri. A collection of short stories.

Others I've enjoyed:

Balzac and the Little Chinese Seamstress by Dai Sijie was pretty good - everyone in my book club liked it.

Ideas of Heaven by Joan Silber - six interconnected stories. This one is a bit longer than your page limit, about 225 pages.

The Postman Always Rings Twice by James Cain. Great crime novel although it is a bit older (1934) than you mentioned.

The Persian Pickle Club by Sandra Dallas. Historical fiction, depression era.

When the Emperor Was Divine by Julie Otsuka. Historical fiction about a family in a Japanese internment camp.

I can think of a few more but they are closer to 250 pages.

Book about a Catholic mystic living in modern times.

I don't know what you like but this was an excellent book, Nectar in a Sieve http://www.paperbackswap.com/book/details/9780451528230-Nectar+in+a+Sieve

A few I'd suggest are:

Stepford Wives by Ira Levin.  Forget about the movie,  Levin increases the psychological suspense with each sparely written page.  Creepy.

Wartime Lies by Louse Begley.  A child escapes Poland as the Nazis march closer.  Written from his point of view, the people and settings encountered on the run are vividly depicted.

Mariette in Ecstasy by Ron Hansen.  Beautifully written mystery set in a convent in 1906.  Just what really happened to Mariette? 

Hula by Lisa Shea.  The lives of two sisters told in an authentic voice as they deal with a crumbling home life over summer vacation.

I'm not sure of the number of pages but these were fairly short reads I've enjoyed:

Fahrenheit 451 - doubt I'll ever read it again but it was worth one reading!

A Streetcar Named Desire - Tennessee Williams - I'd nver seen the movie/play/ or read the book and liked it. I loved 'the glass menagerie' and from what I saw of 'cat on a hot tin roof' I think I'd like reading it as well and they're short plays.

I have 'the  house on mango street' to read now as well as 'breakfast at tiffany's'..got both from the library last week when I was hunting for shorter good reads myself!

There is a sequel to "84, Charing Cross Road" that is a slim book and just as good-"The Duchess Of Bloomsbury Street".   Did you know "84 Charing Cross Road" was made into a movie?  I didn't know until my Mom told me about it-she caught it on TV one afternoon.  I guess it's an older movie.

Also check out "Nothing To Do But Stay" by Carrie Brown (pioneer stories)

"Anna In The Tropics" a play by Nilo Cruz (1929 Cuba, cigar factory)

"The Ladies Of Missalonghi" by Colleen McCullough (I guess this could be a romance, but it's a delightful story set in 1800s (or maybe early 1900s) Australia-the ending was excellent.  It's NOT a hot, steamy bodice-ripper type book at all!)  One of my short favorites.

I haven't read this yet, but "Shopgirl" by Steve Martin is a short book.

I so agree with The Ladies Of Missalonghi, which I think could almost be called an adult fairy tale.  I loved it.  It is short. 

I've been meaning to get 84 Charing Cross Road for ages now.  I saw the movie and it was delightful.  Anne Bancroft & Anthony Hopkins.

Oh, lots of great suggestions here! The first thing that came to mind for me was A Box of Matches by Nicholson Baker.

"Agnes Grey" by Anne Bronte; a little slow-going at first, but a wonderful book to get into after all!

Oops! I just checked and the book is about 250 pages long, but really still worth the read.

Fever 1793

Ok, it has 251 pages, and it's Young Adult, but I loved it anyway.

I loved My Happy Life by Lydia Millet.  So disturbing and sad, yet incredibly well-written and captivating.  It is 160 pages, but a small sized book so is actually quite a quick read.

One in a Million by Kimberla Lawson Roby - really fast read!  I enjoyed it!

I really enjoyed reading The Giver by Lois Lowry.

http://www.paperbackswap.com/book/details/9780440219071-The+Giver

Anthem by Ayn Rand is 66 pages.

Thanks for all the suggestions! Some of the books mentioned I count as some of my favorite books. I adore the Giver and 84 Charing Cross Road. I just recently watched the movie version for the first time. It's delightful!

I'll definitely be looking into the rest of the suggestions.

Interpreter of Maladies by Jhumpa Lahiri.

Though it was written well before 1940 I would also recommend Frankenstein (the first edition, not her 1831 edition - they are distinctively different) by Mary Shelly. I just had to read this for school and I'm completely enamored with it. And Mary Shelly is an incredibly interesting person. :) So, I have to tell everyone to read this!

Hannah, I love Frankenstein (and Shelly!)

The House on Mango Street by Sandra Cisneros

Animal Farm by George Orwell

Nectar in a Sieve by Kamala Markandaya was a bit longer than the above mentioned novels/novellas but it wasn't a long book by any means.

Lydia Cassatt Reading the Morning Paper by Harriet Scott Chessman or Boy in the Striped Pajamas by John Boyne – both quick reads but very satisfying.