CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Revenues
Rental income (Notes 1, 4 and 8)	$ 5,039,060	$ 5,276,699	$ 10,074,975	$ 10,437,871
Recovery of real estate taxes		45,026		45,026
Total revenues	5,039,060	5,321,725	10,074,975	10,482,897
Expenses
Real estate operating expenses	3,514,631	3,116,962	6,763,225	6,093,606
Administrative and general expenses	1,311,011	1,305,871	2,526,646	3,048,807
Depreciation (Note 5)	394,977	472,987	782,387	939,284
Loss on disposition of property and equipment	54,121		54,121
Total expenses	5,274,740	4,895,820	10,126,379	10,081,697
Income (loss) from operations before investment income, interest expense and income taxes	(235,680)	425,905	(51,404)	401,200
Investment income and interest expense:
Investment income (Note 3)	75,915	134,676	140,918	157,111
Change in fair value of marketable securities (Notes 1 and 3)	82,536	(108,158)	63,250	(142,217)
Interest expense (Notes 6 and 10)	(27,052)	(49,463)	(54,501)	(89,328)
Total investment income and interest expense	131,399	(22,945)	149,667	(74,434)
Income (loss) from operations before income taxes	(104,281)	402,960	98,263	326,766
Income taxes provided (benefit)	(47,000)	109,000	27,000	112,000
Net income (loss)	(57,281)	293,960	71,263	214,766
Retained earnings, beginning of period	50,499,867	48,777,328	50,371,323	48,369,386
Reclassification of unrealized gain on investments to retained earnings (Note 1)				487,136
Retained earnings, end of period	$ 50,442,586	$ 49,071,288	$ 50,442,586	$ 49,071,288
Income (loss) per common share (Note 2)	$ (.02)	$ .15	$ .04	$ .11
Dividends per share
Average common shares outstanding	2,015,780	2,015,780	2,015,780	2,015,780