Bacon, cheese and condoms: What librarians find in returned books









window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-5', placement: 'Interstitial Gallery Thumbnails 5', target_type: 'mix' }); _taboola.push({flush: true});









window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-10', placement: 'Interstitial Gallery Thumbnails 10', target_type: 'mix' }); _taboola.push({flush: true});









window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-15', placement: 'Interstitial Gallery Thumbnails 15', target_type: 'mix' }); _taboola.push({flush: true});









window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-20', placement: 'Interstitial Gallery Thumbnails 20', target_type: 'mix' }); _taboola.push({flush: true});









window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-25', placement: 'Interstitial Gallery Thumbnails 25', target_type: 'mix' }); _taboola.push({flush: true});





window._taboola = window._taboola || []; _taboola.push({ mode: 'thumbnails-c', container: 'taboola-interstitial-gallery-thumbnails-28', placement: 'Interstitial Gallery Thumbnails 28', target_type: 'mix' }); _taboola.push({flush: true});









































Photo: Picasa Image 1 of / 28 Caption Close Image 1 of 28 When a Washington state librarian took to Twitter to complain about the Kraft cheese slice left in a returned library book, other librarians chimed in with their bizarre finds. Here they are. When a Washington state librarian took to Twitter to complain about the Kraft cheese slice left in a returned library book, other librarians chimed in with their bizarre finds. Here they are. Photo: Picasa Image 2 of 28 While Holmes' complaint addressed Kraft Singles cheese, others reported cheese findings, too, including a cheese rind.

While Holmes' complaint addressed Kraft Singles cheese, others reported cheese findings, too, including a cheese rind. Photo: Picasa, Mountain Lodge Farm Image 3 of 28 Cooked bacon

Cooked bacon Photo: DustyPixel, Getty Image 4 of 28 Condoms, namely, used ones

Condoms, namely, used ones Photo: JORDAN STEAD, SEATTLEPI.COM Image 5 of 28 Image 6 of 28 A "gnawed" fried chicken leg

A "gnawed" fried chicken leg Image 7 of 28 A circular saw blade - one surely smaller than this

A circular saw blade - one surely smaller than this Photo: Valentino Mauricio Image 8 of 28 Leaves, dried flowers

Leaves, dried flowers Photo: Boston Globe/Boston Globe Via Getty Images Image 9 of 28 Daffodils

Daffodils Photo: GENNA MARTIN, SEATTLEPI.COM Image 10 of 28 Image 11 of 28 Several reports of banana peels

Several reports of banana peels Photo: Will Hearst Image 12 of 28 Broccoli Broccoli Photo: Nikki Fox, Associated Press Image 13 of 28 Used Q-tips

Used Q-tips Photo: Kim Brent Image 14 of 28 Used toothpicks

Used toothpicks Photo: Paul Stephen /San Antonio Express-News Image 15 of 28 Image 16 of 28 Toilet paper

Toilet paper Photo: Tichakorn Khoopatiphatnukoon | EyeEm | Getty Images Image 17 of 28 Multiple claims of human hair clumps

Multiple claims of human hair clumps Photo: Bob Luckey Jr. / Hearst Connecticut Media Image 18 of 28 A $50 bill

A $50 bill Photo: Associated Press Image 19 of 28 A jelly doughnut

A jelly doughnut Photo: Liz Hafalia, SFC Image 20 of 28 Image 21 of 28 Ketchup Ketchup Photo: Toby Talbot Image 22 of 28 Written checks for large amounts

Written checks for large amounts Photo: WILLIAM LUTHER, SAN ANTONIO EXPRESS-NEWS Image 23 of 28 Unpaid bills Unpaid bills Photo: Getty Images/iStockphoto Image 24 of 28 A lollipop stick

A lollipop stick Photo: RUSS ROHDE, Getty Images Image 25 of 28 Image 26 of 28 A human tooth

A human tooth Photo: Samantha McDaniel-Ogletree Image 27 of 28 Jelly Doughnuts dough not belong in that library book. Jelly Doughnuts dough not belong in that library book. Photo: Liz Hafalia, SFC Image 28 of 28 Bacon, cheese and condoms: What librarians find in returned books 1 / 28 Back to Gallery

When a Washington librarian made a polite request for patrons to cease using cheese as a bookmark in her library's books, librarians across the Twitterverse chimed in with their tales of strange library book finds.

The May 1 tweet by Anna Holmes was reportedly triggered by the discovery of a Kraft Singles slice, which to some librarians was a tame deposit.

We collected the responses in the thread in the gallery above.

Dearest patrons, PLEASE stop using cheese as a bookmark. Please. We give away actual bookmarks for free. Or like use a receipt or something. Just not perishables. #librarylife — Anna Holmes (@annaholmeswrit1) May 1, 2018

The tweet was also noticed by the people at NPR's news quiz show, "Wait Wait ... Don't Tell Me!" and host Peter Sagal posed a question about it last week to Luke Burbank, host of the "Too Beautiful To Live" and Live Wire Radio podcasts and frequent "Wait Wait" panelist.

RELATED: Photos: Explore the amazing ancient and modern libraries of the world

You can hear the short segment:

MISSING A JET PACK? The strange stuff left in Ubers last year

It's unclear where Holmes works, but she's also a novel writer in the fantasy genre, it appears. We thank her for the public service announcement about the bookmarks.

Now Playing:

Hey librarians, what have you found in books?

SeattlePI reporter Lynsi Burton can be reached at 206-448-8381 or lynsiburton@seattlepi.com. Follow her on Twitter at @LynsiBurton_PI. Find more from Lynsi here on her author page.