Answers.Body: <p><strong>1 x 6 Bricks</strong></p>
  
  <p>According to BrickLink, 1 x 6 bricks like the ones you describe were made between 1955 and 1969.</p>
  
  <p><img src="https://i.sstatic.net/BNBt3.gif" alt="Brick 1 x 6 without bottom tubes, with cross supports"></p>
  
  <p><strong>4 x 6 Plates</strong></p>
  
  <p>According to BrickLink, there were no 4 x 6 plates with square holes (so-called waffle-bottom plates.) There were, however, 4 x 8's made between 1954 and 1971.</p>
  
  <p><img src="https://i.sstatic.net/7PrdS.jpg" alt="Plate 4 x 8 with Waffle Bottom"></p>
  
  <p><strong>Windows</strong></p>
  
  <p>Don't know...</p>
  
  <p><strong>White Blocks with Clear Inserts</strong></p>
  
  <p>The white blocks with clear inserts could be wheel holders, made between 1959 and 1992:</p>
  
  <p><img src="https://i.sstatic.net/qyAXQ.gif" alt="Brick, Modified 2 x 4 with Wheels Holder Old, Clear Bottom"></p>
  
  <p>Or some kind of light brick:</p>
  
  <p><img src="https://i.sstatic.net/3Ffsu.jpg" alt="Light brick"></p>
  
  <p>It sounds as if your bricks are relatively old, probably made sometime in the 60s. If some of them look a little distorted and don't grip very well, they're probably made of Cellulose Acetate rather than ABS, which would fit with the dates.</p>
  
  <p>To provide any degree of accuracy, however, we really need more information, preferably photos. Also, it might help to know what part of the world you're from, as back in the day there were sometimes different sets for different markets.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-25T00:43:21.263Z
Answers.Text: Oh! I was looking for those wheel holder bricks when I researched my answer - you found them!
Answers.UserDisplayName: Phil B.
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-25T10:04:37.347Z
Answers.Text: Oh, I was under the impression that "slants" means something inclined or sloped. But it is clearly possible that OP was thinking about "slats" instead and just mixed them up or made a typo.
Answers.UserDisplayName: zovits
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-24T21:37:23.900Z
Answers.LastActivityDate: 2015-09-24T21:37:23.900Z
Answers.UserDisplayName: Kramii
Answers.Body: <p>The white blocks with clear inserts (provided they have LEGO markings, a clear side window and 2 or 3 holes on the other side - I can't tell because you didn't post any pictures) could be <a href="http://alpha.bricklink.com/pages/clone/catalogitem.page?P=08010bc01#T=C" rel="nofollow">08010 Electric Light bricks</a>, which were produced between 1980 and 1987.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-09-24T12:11:09.203Z
Answers.LastActivityDate: 2015-09-24T12:11:09.203Z
Answers.UserDisplayName: Phil B.
Body: <p>I purchased a box of LEGO bricks from a yard sale. Some of the 1x6 bricks are hollow with 2 small slants in them. Other 4x6 plates are very thin with square holes in the bottom. It also came with windows with half moon shaped holes in the bottom. Lastly white blocks with clear inserts in the bottom. Does anyone know how old these are?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-09-24T00:48:16.480Z
Comments.Text: Can you add some pictures? It's very difficult to determine what exactly you are looking at based on descriptions only. Also - are you sure they are LEGO - in other words, is the LEGO logo printed on these bricks?
Comments.UserDisplayName: Phil B.
Tags: <part-identification>
Title: Identify age of parts from yard sale
UserDisplayName: Christopher Brehm
ThreadText: # Identify age of parts from yard sale
  
  (Asked by: username_0 on 2015-09-23)
  
  I purchased a box of LEGO bricks from a yard sale. Some of the 1x6 bricks are hollow with 2 small slants in them. Other 4x6 plates are very thin with square holes in the bottom. It also came with windows with half moon shaped holes in the bottom. Lastly white blocks with clear inserts in the bottom. Does anyone know how old these are?
  
  **Tags:** part-identification
  
  > **Comments:**
  > **username_1**: Can you add some pictures? It's very difficult to determine what exactly you are looking at based on descriptions only. Also - are you sure they are LEGO - in other words, is the LEGO logo printed on these bricks?  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_2 on 2015-09-24. Score: 6
  
  **1 x 6 Bricks**
  
  According to BrickLink, 1 x 6 bricks like the ones you describe were made between 1955 and 1969.
  
  ![Brick 1 x 6 without bottom tubes, with cross supports](https://i.sstatic.net/BNBt3.gif)
  
  **4 x 6 Plates**
  
  According to BrickLink, there were no 4 x 6 plates with square holes (so-called waffle-bottom plates.) There were, however, 4 x 8's made between 1954 and 1971.
  
  ![Plate 4 x 8 with Waffle Bottom](https://i.sstatic.net/7PrdS.jpg)
  
  **Windows**
  
  Don't know...
  
  **White Blocks with Clear Inserts**
  
  The white blocks with clear inserts could be wheel holders, made between 1959 and 1992:
  
  ![Brick, Modified 2 x 4 with Wheels Holder Old, Clear Bottom](https://i.sstatic.net/qyAXQ.gif)
  
  Or some kind of light brick:
  
  ![Light brick](https://i.sstatic.net/3Ffsu.jpg)
  
  It sounds as if your bricks are relatively old, probably made sometime in the 60s. If some of them look a little distorted and don't grip very well, they're probably made of Cellulose Acetate rather than ABS, which would fit with the dates.
  
  To provide any degree of accuracy, however, we really need more information, preferably photos. Also, it might help to know what part of the world you're from, as back in the day there were sometimes different sets for different markets.
  
  > **Comments:**
  > **username_1**: Oh! I was looking for those wheel holder bricks when I researched my answer - you found them!  
  > **username_3**: Oh, I was under the impression that "slants" means something inclined or sloped. But it is clearly possible that OP was thinking about "slats" instead and just mixed them up or made a typo.  
  
  ---
  
  ### Answer by username_1 on 2015-09-24. Score: 2
  
  The white blocks with clear inserts (provided they have LEGO markings, a clear side window and 2 or 3 holes on the other side - I can't tell because you didn't post any pictures) could be [08010 Electric Light bricks](http://alpha.bricklink.com/pages/clone/catalogitem.page?P=08010bc01#T=C), which were produced between 1980 and 1987.
  
  
  ---
  
  